| Month | Data | Change | Unit |
|---|---|---|---|
| January, 1981 | -1535 | 0 | Thousand Barrels |
| February, 1981 | 7773 | + 9308 | Thousand Barrels |
| March, 1981 | 19596 | + 11823 | Thousand Barrels |
| April, 1981 | 17853 | -1743 | Thousand Barrels |
| May, 1981 | 12109 | -5744 | Thousand Barrels |
| June, 1981 | 4041 | -8068 | Thousand Barrels |
| July, 1981 | 11163 | + 7122 | Thousand Barrels |
| August, 1981 | -12305 | -23468 | Thousand Barrels |
| September, 1981 | 8554 | + 20859 | Thousand Barrels |
| October, 1981 | 23571 | + 15017 | Thousand Barrels |
| November, 1981 | 9737 | -13834 | Thousand Barrels |
| December, 1981 | 5268 | -4469 | Thousand Barrels |
| January, 1982 | 12428 | + 7160 | Thousand Barrels |
| February, 1982 | 6770 | -5658 | Thousand Barrels |
| March, 1982 | -3757 | -10527 | Thousand Barrels |
| April, 1982 | 1107 | + 4864 | Thousand Barrels |
| May, 1982 | -895 | -2002 | Thousand Barrels |
| June, 1982 | -1187 | -292 | Thousand Barrels |
| July, 1982 | 4564 | + 5751 | Thousand Barrels |
| August, 1982 | 13627 | + 9063 | Thousand Barrels |
| September, 1982 | -7903 | -21530 | Thousand Barrels |
| October, 1982 | 17002 | + 24905 | Thousand Barrels |
| November, 1982 | 11952 | -5050 | Thousand Barrels |
| December, 1982 | -3956 | -15908 | Thousand Barrels |
| January, 1983 | 15455 | + 19411 | Thousand Barrels |
| February, 1983 | 8950 | -6505 | Thousand Barrels |
| March, 1983 | -2565 | -11515 | Thousand Barrels |
| April, 1983 | 12052 | + 14617 | Thousand Barrels |
| May, 1983 | 469 | -11583 | Thousand Barrels |
| June, 1983 | 3660 | + 3191 | Thousand Barrels |
| July, 1983 | -7211 | -10871 | Thousand Barrels |
| August, 1983 | 24679 | + 31890 | Thousand Barrels |
| September, 1983 | 7177 | -17502 | Thousand Barrels |
| October, 1983 | 8500 | + 1323 | Thousand Barrels |
| November, 1983 | -3434 | -11934 | Thousand Barrels |
| December, 1983 | 10214 | + 13648 | Thousand Barrels |
| January, 1984 | 10170 | -44 | Thousand Barrels |
| February, 1984 | -5711 | -15881 | Thousand Barrels |
| March, 1984 | 786 | + 6497 | Thousand Barrels |
| April, 1984 | 14290 | + 13504 | Thousand Barrels |
| May, 1984 | 20999 | + 6709 | Thousand Barrels |
| June, 1984 | 3120 | -17879 | Thousand Barrels |
| July, 1984 | 5228 | + 2108 | Thousand Barrels |
| August, 1984 | -7738 | -12966 | Thousand Barrels |
| September, 1984 | -7807 | -69 | Thousand Barrels |
| October, 1984 | 23534 | + 31341 | Thousand Barrels |
| November, 1984 | 7075 | -16459 | Thousand Barrels |
| December, 1984 | 8996 | + 1921 | Thousand Barrels |
| January, 1985 | -2345 | -11341 | Thousand Barrels |
| February, 1985 | -11889 | -9544 | Thousand Barrels |
| March, 1985 | 9594 | + 21483 | Thousand Barrels |
| April, 1985 | 15607 | + 6013 | Thousand Barrels |
| May, 1985 | 21712 | + 6105 | Thousand Barrels |
| June, 1985 | -7931 | -29643 | Thousand Barrels |
| July, 1985 | -10114 | -2183 | Thousand Barrels |
| August, 1985 | -4915 | + 5199 | Thousand Barrels |
| September, 1985 | 1020 | + 5935 | Thousand Barrels |
| October, 1985 | -3052 | -4072 | Thousand Barrels |
| November, 1985 | 8839 | + 11891 | Thousand Barrels |
| December, 1985 | 1801 | -7038 | Thousand Barrels |
| January, 1986 | 11861 | + 10060 | Thousand Barrels |
| February, 1986 | 1036 | -10825 | Thousand Barrels |
| March, 1986 | 10687 | + 9651 | Thousand Barrels |
| April, 1986 | -1220 | -11907 | Thousand Barrels |
| May, 1986 | -8055 | -6835 | Thousand Barrels |
| June, 1986 | -76 | + 7979 | Thousand Barrels |
| July, 1986 | 16757 | + 16833 | Thousand Barrels |
| August, 1986 | -7511 | -24268 | Thousand Barrels |
| September, 1986 | 6497 | + 14008 | Thousand Barrels |
| October, 1986 | 7222 | + 725 | Thousand Barrels |
| November, 1986 | -2851 | -10073 | Thousand Barrels |
| December, 1986 | -5766 | -2915 | Thousand Barrels |
| January, 1987 | 5150 | + 10916 | Thousand Barrels |
| February, 1987 | 628 | -4522 | Thousand Barrels |
| March, 1987 | 3871 | + 3243 | Thousand Barrels |
| April, 1987 | -1498 | -5369 | Thousand Barrels |
| May, 1987 | -1108 | + 390 | Thousand Barrels |
| June, 1987 | 4953 | + 6061 | Thousand Barrels |
| July, 1987 | -1023 | -5976 | Thousand Barrels |
| August, 1987 | 10684 | + 11707 | Thousand Barrels |
| September, 1987 | 6608 | -4076 | Thousand Barrels |
| October, 1987 | 20492 | + 13884 | Thousand Barrels |
| November, 1987 | 10638 | -9854 | Thousand Barrels |
| December, 1987 | -12541 | -23179 | Thousand Barrels |
| January, 1988 | -1340 | + 11201 | Thousand Barrels |
| February, 1988 | 3864 | + 5204 | Thousand Barrels |
| March, 1988 | 6774 | + 2910 | Thousand Barrels |
| April, 1988 | 5694 | -1080 | Thousand Barrels |
| May, 1988 | 2979 | -2715 | Thousand Barrels |
| June, 1988 | 1300 | -1679 | Thousand Barrels |
| July, 1988 | -8080 | -9380 | Thousand Barrels |
| August, 1988 | -15125 | -7045 | Thousand Barrels |
| September, 1988 | -2490 | + 12635 | Thousand Barrels |
| October, 1988 | 12370 | + 14860 | Thousand Barrels |
| November, 1988 | 98 | -12272 | Thousand Barrels |
| December, 1988 | -5813 | -5911 | Thousand Barrels |
| January, 1989 | 5557 | + 11370 | Thousand Barrels |
| February, 1989 | 1304 | -4253 | Thousand Barrels |
| March, 1989 | -3941 | -5245 | Thousand Barrels |
| April, 1989 | 14811 | + 18752 | Thousand Barrels |
| May, 1989 | 8412 | -6399 | Thousand Barrels |
| June, 1989 | -13031 | -21443 | Thousand Barrels |
| July, 1989 | 4596 | + 17627 | Thousand Barrels |
| August, 1989 | 8770 | + 4174 | Thousand Barrels |
| September, 1989 | -4333 | -13103 | Thousand Barrels |
| October, 1989 | 2262 | + 6595 | Thousand Barrels |
| November, 1989 | 16215 | + 13953 | Thousand Barrels |
| December, 1989 | -9348 | -25563 | Thousand Barrels |
| January, 1990 | 8455 | + 17803 | Thousand Barrels |
| February, 1990 | -9250 | -17705 | Thousand Barrels |
| March, 1990 | 32771 | + 42021 | Thousand Barrels |
| April, 1990 | 766 | -32005 | Thousand Barrels |
| May, 1990 | 14837 | + 14071 | Thousand Barrels |
| June, 1990 | 2174 | -12663 | Thousand Barrels |
| July, 1990 | -4762 | -6936 | Thousand Barrels |
| August, 1990 | -7033 | -2271 | Thousand Barrels |
| September, 1990 | -26890 | -19857 | Thousand Barrels |
| October, 1990 | 3454 | + 30344 | Thousand Barrels |
| November, 1990 | -10926 | -14380 | Thousand Barrels |
| December, 1990 | -16357 | -5431 | Thousand Barrels |
| January, 1991 | -2199 | + 14158 | Thousand Barrels |
| February, 1991 | 6474 | + 8673 | Thousand Barrels |
| March, 1991 | -7409 | -13883 | Thousand Barrels |
| April, 1991 | 1488 | + 8897 | Thousand Barrels |
| May, 1991 | 17550 | + 16062 | Thousand Barrels |
| June, 1991 | -8961 | -26511 | Thousand Barrels |
| July, 1991 | -4728 | + 4233 | Thousand Barrels |
| August, 1991 | 3208 | + 7936 | Thousand Barrels |
| September, 1991 | -4666 | -7874 | Thousand Barrels |
| October, 1991 | 1595 | + 6261 | Thousand Barrels |
| November, 1991 | 1290 | -305 | Thousand Barrels |
| December, 1991 | -18927 | -20217 | Thousand Barrels |
| January, 1992 | 16742 | + 35669 | Thousand Barrels |
| February, 1992 | 4966 | -11776 | Thousand Barrels |
| March, 1992 | -7763 | -12729 | Thousand Barrels |
| April, 1992 | 9459 | + 17222 | Thousand Barrels |
| May, 1992 | -4479 | -13938 | Thousand Barrels |
| June, 1992 | -17434 | -12955 | Thousand Barrels |
| July, 1992 | 7563 | + 24997 | Thousand Barrels |
| August, 1992 | -3848 | -11411 | Thousand Barrels |
| September, 1992 | -4812 | -964 | Thousand Barrels |
| October, 1992 | 12741 | + 17553 | Thousand Barrels |
| November, 1992 | -6813 | -19554 | Thousand Barrels |
| December, 1992 | -6560 | + 253 | Thousand Barrels |
| January, 1993 | 9146 | + 15706 | Thousand Barrels |
| February, 1993 | 6133 | -3013 | Thousand Barrels |
| March, 1993 | 6581 | + 448 | Thousand Barrels |
| April, 1993 | 15689 | + 9108 | Thousand Barrels |
| May, 1993 | 4568 | -11121 | Thousand Barrels |
| June, 1993 | 48 | -4520 | Thousand Barrels |
| July, 1993 | 177 | + 129 | Thousand Barrels |
| August, 1993 | -15648 | -15825 | Thousand Barrels |
| September, 1993 | -13169 | + 2479 | Thousand Barrels |
| October, 1993 | 10179 | + 23348 | Thousand Barrels |
| November, 1993 | 7533 | -2646 | Thousand Barrels |
| December, 1993 | -1636 | -9169 | Thousand Barrels |
| January, 1994 | 2794 | + 4430 | Thousand Barrels |
| February, 1994 | -2715 | -5509 | Thousand Barrels |
| March, 1994 | 10057 | + 12772 | Thousand Barrels |
| April, 1994 | -2037 | -12094 | Thousand Barrels |
| May, 1994 | -7842 | -5805 | Thousand Barrels |
| June, 1994 | -3119 | + 4723 | Thousand Barrels |
| July, 1994 | 4597 | + 7716 | Thousand Barrels |
| August, 1994 | -4006 | -8603 | Thousand Barrels |
| September, 1994 | 6808 | + 10814 | Thousand Barrels |
| October, 1994 | 7910 | + 1102 | Thousand Barrels |
| November, 1994 | 3048 | -4862 | Thousand Barrels |
| December, 1994 | -9045 | -12093 | Thousand Barrels |
| January, 1995 | -6781 | + 2264 | Thousand Barrels |
| February, 1995 | -1378 | + 5403 | Thousand Barrels |
| March, 1995 | 10402 | + 11780 | Thousand Barrels |
| April, 1995 | -3042 | -13444 | Thousand Barrels |
| May, 1995 | -4095 | -1053 | Thousand Barrels |
| June, 1995 | -4438 | -343 | Thousand Barrels |
| July, 1995 | -12314 | -7876 | Thousand Barrels |
| August, 1995 | -7846 | + 4468 | Thousand Barrels |
| September, 1995 | -1909 | + 5937 | Thousand Barrels |
| October, 1995 | 5221 | + 7130 | Thousand Barrels |
| November, 1995 | 7894 | + 2673 | Thousand Barrels |
| December, 1995 | -15661 | -23555 | Thousand Barrels |
| January, 1996 | -257 | + 15404 | Thousand Barrels |
| February, 1996 | -1825 | -1568 | Thousand Barrels |
| March, 1996 | -4104 | -2279 | Thousand Barrels |
| April, 1996 | 881 | + 4985 | Thousand Barrels |
| May, 1996 | 67 | -814 | Thousand Barrels |
| June, 1996 | 9159 | + 9092 | Thousand Barrels |
| July, 1996 | -7572 | -16731 | Thousand Barrels |
| August, 1996 | -586 | + 6986 | Thousand Barrels |
| September, 1996 | -14956 | -14370 | Thousand Barrels |
| October, 1996 | 5767 | + 20723 | Thousand Barrels |
| November, 1996 | -12432 | -18199 | Thousand Barrels |
| December, 1996 | -19441 | -7009 | Thousand Barrels |
| January, 1997 | 14319 | + 33760 | Thousand Barrels |
| February, 1997 | -3407 | -17726 | Thousand Barrels |
| March, 1997 | 16106 | + 19513 | Thousand Barrels |
| April, 1997 | 5910 | -10196 | Thousand Barrels |
| May, 1997 | 7140 | + 1230 | Thousand Barrels |
| June, 1997 | -5959 | -13099 | Thousand Barrels |
| July, 1997 | -10633 | -4674 | Thousand Barrels |
| August, 1997 | -8785 | + 1848 | Thousand Barrels |
| September, 1997 | 2859 | + 11644 | Thousand Barrels |
| October, 1997 | 12177 | + 9318 | Thousand Barrels |
| November, 1997 | 7556 | -4621 | Thousand Barrels |
| December, 1997 | -18833 | -26389 | Thousand Barrels |
| January, 1998 | 12065 | + 30898 | Thousand Barrels |
| February, 1998 | 1047 | -11018 | Thousand Barrels |
| March, 1998 | 16679 | + 15632 | Thousand Barrels |
| April, 1998 | 16665 | -14 | Thousand Barrels |
| May, 1998 | -272 | -16937 | Thousand Barrels |
| June, 1998 | -18598 | -18326 | Thousand Barrels |
| July, 1998 | 5789 | + 24387 | Thousand Barrels |
| August, 1998 | -9076 | -14865 | Thousand Barrels |
| September, 1998 | -19219 | -10143 | Thousand Barrels |
| October, 1998 | 20974 | + 40193 | Thousand Barrels |
| November, 1998 | 9620 | -11354 | Thousand Barrels |
| December, 1998 | -8845 | -18465 | Thousand Barrels |
| January, 1999 | 9213 | + 18058 | Thousand Barrels |
| February, 1999 | 1410 | -7803 | Thousand Barrels |
| March, 1999 | 11377 | + 9967 | Thousand Barrels |
| April, 1999 | -9018 | -20395 | Thousand Barrels |
| May, 1999 | 5652 | + 14670 | Thousand Barrels |
| June, 1999 | -7063 | -12715 | Thousand Barrels |
| July, 1999 | 1049 | + 8112 | Thousand Barrels |
| August, 1999 | -17537 | -18586 | Thousand Barrels |
| September, 1999 | -11043 | + 6494 | Thousand Barrels |
| October, 1999 | -2650 | + 8393 | Thousand Barrels |
| November, 1999 | -8896 | -6246 | Thousand Barrels |
| December, 1999 | -15719 | -6823 | Thousand Barrels |
| January, 2000 | 652 | + 16371 | Thousand Barrels |
| February, 2000 | 2842 | + 2190 | Thousand Barrels |
| March, 2000 | 11283 | + 8441 | Thousand Barrels |
| April, 2000 | 6746 | -4537 | Thousand Barrels |
| May, 2000 | -9121 | -15867 | Thousand Barrels |
| June, 2000 | -4609 | + 4512 | Thousand Barrels |
| July, 2000 | -6975 | -2366 | Thousand Barrels |
| August, 2000 | 6111 | + 13086 | Thousand Barrels |
| September, 2000 | -10413 | -16524 | Thousand Barrels |
| October, 2000 | -5863 | + 4550 | Thousand Barrels |
| November, 2000 | -8429 | -2566 | Thousand Barrels |
| December, 2000 | -7762 | + 667 | Thousand Barrels |
| January, 2001 | 9817 | + 17579 | Thousand Barrels |
| February, 2001 | -11858 | -21675 | Thousand Barrels |
| March, 2001 | 26690 | + 38548 | Thousand Barrels |
| April, 2001 | 22093 | -4597 | Thousand Barrels |
| May, 2001 | -1293 | -23386 | Thousand Barrels |
| June, 2001 | -20115 | -18822 | Thousand Barrels |
| July, 2001 | 5098 | + 25213 | Thousand Barrels |
| August, 2001 | -4948 | -10046 | Thousand Barrels |
| September, 2001 | 2378 | + 7326 | Thousand Barrels |
| October, 2001 | 4396 | + 2018 | Thousand Barrels |
| November, 2001 | 1072 | -3324 | Thousand Barrels |
| December, 2001 | 2706 | + 1634 | Thousand Barrels |
| January, 2002 | 12678 | + 9972 | Thousand Barrels |
| February, 2002 | 12409 | -269 | Thousand Barrels |
| March, 2002 | 7682 | -4727 | Thousand Barrels |
| April, 2002 | -3599 | -11281 | Thousand Barrels |
| May, 2002 | 6895 | + 10494 | Thousand Barrels |
| June, 2002 | -4281 | -11176 | Thousand Barrels |
| July, 2002 | -11217 | -6936 | Thousand Barrels |
| August, 2002 | -4310 | + 6907 | Thousand Barrels |
| September, 2002 | -20605 | -16295 | Thousand Barrels |
| October, 2002 | 23220 | + 43825 | Thousand Barrels |
| November, 2002 | 2873 | -20347 | Thousand Barrels |
| December, 2002 | -7261 | -10134 | Thousand Barrels |
| January, 2003 | -3413 | + 3848 | Thousand Barrels |
| February, 2003 | -2959 | + 454 | Thousand Barrels |
| March, 2003 | 10501 | + 13460 | Thousand Barrels |
| April, 2003 | 10126 | -375 | Thousand Barrels |
| May, 2003 | -2321 | -12447 | Thousand Barrels |
| June, 2003 | 4496 | + 6817 | Thousand Barrels |
| July, 2003 | 4194 | -302 | Thousand Barrels |
| August, 2003 | 466 | -3728 | Thousand Barrels |
| September, 2003 | 13224 | + 12758 | Thousand Barrels |
| October, 2003 | 14496 | + 1272 | Thousand Barrels |
| November, 2003 | -10690 | -25186 | Thousand Barrels |
| December, 2003 | -7562 | + 3128 | Thousand Barrels |
| January, 2004 | 5499 | + 13061 | Thousand Barrels |
| February, 2004 | 18416 | + 12917 | Thousand Barrels |
| March, 2004 | 18309 | -107 | Thousand Barrels |
| April, 2004 | 12025 | -6284 | Thousand Barrels |
| May, 2004 | 4335 | -7690 | Thousand Barrels |
| June, 2004 | 1376 | -2959 | Thousand Barrels |
| July, 2004 | -7133 | -8509 | Thousand Barrels |
| August, 2004 | -12445 | -5312 | Thousand Barrels |
| September, 2004 | -4424 | + 8021 | Thousand Barrels |
| October, 2004 | 13767 | + 18191 | Thousand Barrels |
| November, 2004 | 4014 | -9753 | Thousand Barrels |
| December, 2004 | 339 | -3675 | Thousand Barrels |
| January, 2005 | 5038 | + 4699 | Thousand Barrels |
| February, 2005 | 18039 | + 13001 | Thousand Barrels |
| March, 2005 | 23633 | + 5594 | Thousand Barrels |
| April, 2005 | 21941 | -1692 | Thousand Barrels |
| May, 2005 | 370 | -21571 | Thousand Barrels |
| June, 2005 | -5687 | -6057 | Thousand Barrels |
| July, 2005 | -7069 | -1382 | Thousand Barrels |
| August, 2005 | -6911 | + 158 | Thousand Barrels |
| September, 2005 | -10314 | -3403 | Thousand Barrels |
| October, 2005 | 7287 | + 17601 | Thousand Barrels |
| November, 2005 | 680 | -6607 | Thousand Barrels |
| December, 2005 | 242 | -438 | Thousand Barrels |
| January, 2006 | -1533 | -1775 | Thousand Barrels |
| February, 2006 | 20490 | + 22023 | Thousand Barrels |
| March, 2006 | 1319 | -19171 | Thousand Barrels |
| April, 2006 | 6674 | + 5355 | Thousand Barrels |
| May, 2006 | -6259 | -12933 | Thousand Barrels |
| June, 2006 | -4516 | + 1743 | Thousand Barrels |
| July, 2006 | -5138 | -622 | Thousand Barrels |
| August, 2006 | 1230 | + 6368 | Thousand Barrels |
| September, 2006 | -26 | -1256 | Thousand Barrels |
| October, 2006 | 7086 | + 7112 | Thousand Barrels |
| November, 2006 | -4733 | -11819 | Thousand Barrels |
| December, 2006 | -22365 | -17632 | Thousand Barrels |
| January, 2007 | 11514 | + 33879 | Thousand Barrels |
| February, 2007 | -7047 | -18561 | Thousand Barrels |
| March, 2007 | 13252 | + 20299 | Thousand Barrels |
| April, 2007 | 12040 | -1212 | Thousand Barrels |
| May, 2007 | 12175 | + 135 | Thousand Barrels |
| June, 2007 | 865 | -11310 | Thousand Barrels |
| July, 2007 | -17473 | -18338 | Thousand Barrels |
| August, 2007 | -15843 | + 1630 | Thousand Barrels |
| September, 2007 | -7063 | + 8780 | Thousand Barrels |
| October, 2007 | -2682 | + 4381 | Thousand Barrels |
| November, 2007 | -6479 | -3797 | Thousand Barrels |
| December, 2007 | -12349 | -5870 | Thousand Barrels |
| January, 2008 | 11742 | + 24091 | Thousand Barrels |
| February, 2008 | 6373 | -5369 | Thousand Barrels |
| March, 2008 | 14141 | + 7768 | Thousand Barrels |
| April, 2008 | 6117 | -8024 | Thousand Barrels |
| May, 2008 | -13304 | -19421 | Thousand Barrels |
| June, 2008 | -6194 | + 7110 | Thousand Barrels |
| July, 2008 | 854 | + 7048 | Thousand Barrels |
| August, 2008 | 7163 | + 6309 | Thousand Barrels |
| September, 2008 | -3329 | -10492 | Thousand Barrels |
| October, 2008 | 8094 | + 11423 | Thousand Barrels |
| November, 2008 | 8848 | + 754 | Thousand Barrels |
| December, 2008 | 4229 | -4619 | Thousand Barrels |
| January, 2009 | 26872 | + 22643 | Thousand Barrels |
| February, 2009 | 7886 | -18986 | Thousand Barrels |
| March, 2009 | 16402 | + 8516 | Thousand Barrels |
| April, 2009 | 9729 | -6673 | Thousand Barrels |
| May, 2009 | -8153 | -17882 | Thousand Barrels |
| June, 2009 | -10049 | -1896 | Thousand Barrels |
| July, 2009 | -1447 | + 8602 | Thousand Barrels |
| August, 2009 | -9670 | -8223 | Thousand Barrels |
| September, 2009 | 522 | + 10192 | Thousand Barrels |
| October, 2009 | -2670 | -3192 | Thousand Barrels |
| November, 2009 | 5485 | + 8155 | Thousand Barrels |
| December, 2009 | -11219 | -16704 | Thousand Barrels |
| January, 2010 | 8960 | + 20179 | Thousand Barrels |
| February, 2010 | 6267 | -2693 | Thousand Barrels |
| March, 2010 | 16063 | + 9796 | Thousand Barrels |
| April, 2010 | 4188 | -11875 | Thousand Barrels |
| May, 2010 | -1358 | -5546 | Thousand Barrels |
| June, 2010 | 3703 | + 5061 | Thousand Barrels |
| July, 2010 | -7976 | -11679 | Thousand Barrels |
| August, 2010 | 1697 | + 9673 | Thousand Barrels |
| September, 2010 | 3531 | + 1834 | Thousand Barrels |
| October, 2010 | 4549 | + 1018 | Thousand Barrels |
| November, 2010 | -15391 | -19940 | Thousand Barrels |
| December, 2010 | -19362 | -3971 | Thousand Barrels |
| January, 2011 | 11375 | + 30737 | Thousand Barrels |
| February, 2011 | 3354 | -8021 | Thousand Barrels |
| March, 2011 | 11607 | + 8253 | Thousand Barrels |
| April, 2011 | 5992 | -5615 | Thousand Barrels |
| May, 2011 | 1659 | -4333 | Thousand Barrels |
| June, 2011 | -12384 | -14043 | Thousand Barrels |
| July, 2011 | -17723 | -5339 | Thousand Barrels |
| August, 2011 | -21234 | -3511 | Thousand Barrels |
| September, 2011 | -17077 | + 4157 | Thousand Barrels |
| October, 2011 | 6677 | + 23754 | Thousand Barrels |
| November, 2011 | -320 | -6997 | Thousand Barrels |
| December, 2011 | -6381 | -6061 | Thousand Barrels |
| January, 2012 | 9661 | + 16042 | Thousand Barrels |
| February, 2012 | 4997 | -4664 | Thousand Barrels |
| March, 2012 | 24729 | + 19732 | Thousand Barrels |
| April, 2012 | 9437 | -15292 | Thousand Barrels |
| May, 2012 | 6714 | -2723 | Thousand Barrels |
| June, 2012 | -1606 | -8320 | Thousand Barrels |
| July, 2012 | -15477 | -13871 | Thousand Barrels |
| August, 2012 | -10286 | + 5191 | Thousand Barrels |
| September, 2012 | 5953 | + 16239 | Thousand Barrels |
| October, 2012 | 6189 | + 236 | Thousand Barrels |
| November, 2012 | 2880 | -3309 | Thousand Barrels |
| December, 2012 | -14299 | -17179 | Thousand Barrels |
| January, 2013 | 12035 | + 26334 | Thousand Barrels |
| February, 2013 | 7669 | -4366 | Thousand Barrels |
| March, 2013 | 7822 | + 153 | Thousand Barrels |
| April, 2013 | 2934 | -4888 | Thousand Barrels |
| May, 2013 | -4251 | -7185 | Thousand Barrels |
| June, 2013 | -14497 | -10246 | Thousand Barrels |
| July, 2013 | -9416 | + 5081 | Thousand Barrels |
| August, 2013 | -2264 | + 7152 | Thousand Barrels |
| September, 2013 | 6889 | + 9153 | Thousand Barrels |
| October, 2013 | 8581 | + 1692 | Thousand Barrels |
| November, 2013 | -8425 | -17006 | Thousand Barrels |
| December, 2013 | -16981 | -8556 | Thousand Barrels |
| January, 2014 | 9047 | + 26028 | Thousand Barrels |
| February, 2014 | 9036 | -11 | Thousand Barrels |
| March, 2014 | 9673 | + 637 | Thousand Barrels |
| April, 2014 | 7738 | -1935 | Thousand Barrels |
| May, 2014 | -2222 | -9960 | Thousand Barrels |
| June, 2014 | -11155 | -8933 | Thousand Barrels |
| July, 2014 | -15568 | -4413 | Thousand Barrels |
| August, 2014 | -7661 | + 7907 | Thousand Barrels |
| September, 2014 | 1076 | + 8737 | Thousand Barrels |
| October, 2014 | 19559 | + 18483 | Thousand Barrels |
| November, 2014 | 5009 | -14550 | Thousand Barrels |
| December, 2014 | 4132 | -877 | Thousand Barrels |
| January, 2015 | 28345 | + 24213 | Thousand Barrels |
| February, 2015 | 26097 | -2248 | Thousand Barrels |
| March, 2015 | 27884 | + 1787 | Thousand Barrels |
| April, 2015 | 9510 | -18374 | Thousand Barrels |
| May, 2015 | -2354 | -11864 | Thousand Barrels |
| June, 2015 | -8605 | -6251 | Thousand Barrels |
| July, 2015 | -12758 | -4153 | Thousand Barrels |
| August, 2015 | 1040 | + 13798 | Thousand Barrels |
| September, 2015 | 3274 | + 2234 | Thousand Barrels |
| October, 2015 | 26082 | + 22808 | Thousand Barrels |
| November, 2015 | 778 | -25304 | Thousand Barrels |
| December, 2015 | -6778 | -7556 | Thousand Barrels |
| January, 2016 | 22544 | + 29322 | Thousand Barrels |
| February, 2016 | 20384 | -2160 | Thousand Barrels |
| March, 2016 | 12656 | -7728 | Thousand Barrels |
| April, 2016 | 4507 | -8149 | Thousand Barrels |
| May, 2016 | 2535 | -1972 | Thousand Barrels |
| June, 2016 | -11008 | -13543 | Thousand Barrels |
| July, 2016 | -7403 | + 3605 | Thousand Barrels |
| August, 2016 | -6786 | + 617 | Thousand Barrels |
| September, 2016 | -15141 | -8355 | Thousand Barrels |
| October, 2016 | 19663 | + 34804 | Thousand Barrels |
| November, 2016 | -472 | -20135 | Thousand Barrels |
| December, 2016 | -6114 | -5642 | Thousand Barrels |
| January, 2017 | 22172 | + 28286 | Thousand Barrels |
| February, 2017 | 18368 | -3804 | Thousand Barrels |
| March, 2017 | 9861 | -8507 | Thousand Barrels |
| April, 2017 | -17032 | -26893 | Thousand Barrels |
| May, 2017 | -11787 | + 5245 | Thousand Barrels |
| June, 2017 | -20555 | -8768 | Thousand Barrels |
| July, 2017 | -18437 | + 2118 | Thousand Barrels |
| August, 2017 | -23513 | -5076 | Thousand Barrels |
| September, 2017 | 4447 | + 27960 | Thousand Barrels |
| October, 2017 | -14546 | -18993 | Thousand Barrels |
| November, 2017 | -14350 | + 196 | Thousand Barrels |
| December, 2017 | -29855 | -15505 | Thousand Barrels |
| January, 2018 | 517 | + 30372 | Thousand Barrels |
| February, 2018 | 4307 | + 3790 | Thousand Barrels |
| March, 2018 | 1094 | -3213 | Thousand Barrels |
| April, 2018 | 10149 | + 9055 | Thousand Barrels |
| May, 2018 | -6180 | -16329 | Thousand Barrels |
| June, 2018 | -19197 | -13017 | Thousand Barrels |
| July, 2018 | -5513 | + 13684 | Thousand Barrels |
| August, 2018 | -2060 | + 3453 | Thousand Barrels |
| September, 2018 | 9099 | + 11159 | Thousand Barrels |
| October, 2018 | 11955 | + 2856 | Thousand Barrels |
| November, 2018 | 10298 | -1657 | Thousand Barrels |
| December, 2018 | -7306 | -17604 | Thousand Barrels |
| January, 2019 | 6471 | + 13777 | Thousand Barrels |
| February, 2019 | 2675 | -3796 | Thousand Barrels |
| March, 2019 | 7230 | + 4555 | Thousand Barrels |
| April, 2019 | 10374 | + 3144 | Thousand Barrels |
| May, 2019 | 7553 | -2821 | Thousand Barrels |
| June, 2019 | -17679 | -25232 | Thousand Barrels |
| July, 2019 | -21858 | -4179 | Thousand Barrels |
| August, 2019 | -11470 | + 10388 | Thousand Barrels |
| September, 2019 | -4504 | + 6966 | Thousand Barrels |
| October, 2019 | 14088 | + 18592 | Thousand Barrels |
| November, 2019 | -3666 | -17754 | Thousand Barrels |
| December, 2019 | -13115 | -9449 | Thousand Barrels |
| January, 2020 | 7481 | + 20596 | Thousand Barrels |
| February, 2020 | 12310 | + 4829 | Thousand Barrels |
| March, 2020 | 30778 | + 18468 | Thousand Barrels |
| April, 2020 | 48553 | + 17775 | Thousand Barrels |
| May, 2020 | 3058 | -45495 | Thousand Barrels |
| June, 2020 | 18761 | + 15703 | Thousand Barrels |
| July, 2020 | -12416 | -31177 | Thousand Barrels |
| August, 2020 | -24335 | -11919 | Thousand Barrels |
| September, 2020 | -12019 | + 12316 | Thousand Barrels |
| October, 2020 | -7432 | + 4587 | Thousand Barrels |
| November, 2020 | 6359 | + 13791 | Thousand Barrels |
| December, 2020 | -15280 | -21639 | Thousand Barrels |
| January, 2021 | -9405 | + 5875 | Thousand Barrels |
| February, 2021 | 16990 | + 26395 | Thousand Barrels |
| March, 2021 | 8748 | -8242 | Thousand Barrels |
| April, 2021 | -16518 | -25266 | Thousand Barrels |
| May, 2021 | -18979 | -2461 | Thousand Barrels |
| June, 2021 | -34924 | -15945 | Thousand Barrels |
| July, 2021 | -9035 | + 25889 | Thousand Barrels |
| Year | Year Open - Year Close | Year Min - Year Max | Year Average | Year Change |
|---|---|---|---|---|
| 2021 | -9405 - -9035 | -34924 - 16990 | -9017.57 | + 370 |
| 2020 | 7481 - -15280 | -24335 - 48553 | 4651.5 | -22761 |
| 2019 | 6471 - -13115 | -21858 - 14088 | -1991.75 | -19586 |
| 2018 | 517 - -7306 | -19197 - 11955 | 596.92 | -7823 |
| 2017 | 22172 - -29855 | -29855 - 22172 | -7935.58 | -52027 |
| 2016 | 22544 - -6114 | -15141 - 22544 | 2947.08 | -28658 |
| 2015 | 28345 - -6778 | -12758 - 28345 | 7709.58 | -35123 |
| 2014 | 9047 - 4132 | -15568 - 19559 | 2388.67 | -4915 |
| 2013 | 12035 - -16981 | -16981 - 12035 | -825.33 | -29016 |
| 2012 | 9661 - -14299 | -15477 - 24729 | 2407.67 | -23960 |
| 2011 | 11375 - -6381 | -21234 - 11607 | -2871.25 | -17756 |
| 2010 | 8960 - -19362 | -19362 - 16063 | 405.92 | -28322 |
| 2009 | 26872 - -11219 | -11219 - 26872 | 1974 | -38091 |
| 2008 | 11742 - 4229 | -13304 - 14141 | 3727.83 | -7513 |
| 2007 | 11514 - -12349 | -17473 - 13252 | -1590.83 | -23863 |
| 2006 | -1533 - -22365 | -22365 - 20490 | -647.58 | -20832 |
| 2005 | 5038 - 242 | -10314 - 23633 | 3937.42 | -4796 |
| 2004 | 5499 - 339 | -12445 - 18416 | 4506.5 | -5160 |
| 2003 | -3413 - -7562 | -10690 - 14496 | 2546.5 | -4149 |
| 2002 | 12678 - -7261 | -20605 - 23220 | 1207 | -19939 |
| 2001 | 9817 - 2706 | -20115 - 26690 | 3003 | -7111 |
| 2000 | 652 - -7762 | -10413 - 11283 | -2128.17 | -8414 |
| 1999 | 9213 - -15719 | -17537 - 11377 | -3602.08 | -24932 |
| 1998 | 12065 - -8845 | -19219 - 20974 | 2235.75 | -20910 |
| 1997 | 14319 - -18833 | -18833 - 16106 | 1537.5 | -33152 |
| 1996 | -257 - -19441 | -19441 - 9159 | -3774.92 | -19184 |
| 1995 | -6781 - -15661 | -15661 - 10402 | -2828.92 | -8880 |
| 1994 | 2794 - -9045 | -9045 - 10057 | 537.5 | -11839 |
| 1993 | 9146 - -1636 | -15648 - 15689 | 2466.75 | -10782 |
| 1992 | 16742 - -6560 | -17434 - 16742 | -19.83 | -23302 |
| 1991 | -2199 - -18927 | -18927 - 17550 | -1273.75 | -16728 |
| 1990 | 8455 - -16357 | -26890 - 32771 | -1063.42 | -24812 |
| 1989 | 5557 - -9348 | -13031 - 16215 | 2606.17 | -14905 |
| 1988 | -1340 - -5813 | -15125 - 12370 | 19.25 | -4473 |
| 1987 | 5150 - -12541 | -12541 - 20492 | 3904.5 | -17691 |
| 1986 | 11861 - -5766 | -8055 - 16757 | 2381.75 | -17627 |
| 1985 | -2345 - 1801 | -11889 - 21712 | 1527.25 | + 4146 |
| 1984 | 10170 - 8996 | -7807 - 23534 | 6078.5 | -1174 |
| 1983 | 15455 - 10214 | -7211 - 24679 | 6495.5 | -5241 |
| 1982 | 12428 - -3956 | -7903 - 17002 | 4146 | -16384 |
| 1981 | -1535 - 5268 | -12305 - 23571 | 8818.75 | + 6803 |