Month | Price | Change | Unit |
---|---|---|---|
January, 1988 | 48.8 | 0 | Percent |
February, 1988 | 47.9 | -0.9 | Percent |
March, 1988 | 43.3 | -4.6 | Percent |
April, 1988 | 42.7 | -0.59999999999999 | Percent |
May, 1988 | 39.2 | -3.5 | Percent |
June, 1988 | 37.9 | -1.3 | Percent |
July, 1988 | 38.8 | + 0.9 | Percent |
August, 1988 | 38.8 | 0 | Percent |
September, 1988 | 41.2 | + 2.4 | Percent |
October, 1988 | 43.3 | + 2.1 | Percent |
November, 1988 | 42.1 | -1.2 | Percent |
December, 1988 | 44.4 | + 2.3 | Percent |
January, 1989 | 41.1 | -3.3 | Percent |
February, 1989 | 39.9 | -1.2 | Percent |
March, 1989 | 38.2 | -1.7 | Percent |
April, 1989 | 36.8 | -1.4 | Percent |
May, 1989 | 35.9 | -0.9 | Percent |
June, 1989 | 37 | + 1.1 | Percent |
July, 1989 | 34 | -3 | Percent |
August, 1989 | 32.8 | -1.2 | Percent |
September, 1989 | 33.8 | + 1 | Percent |
October, 1989 | 37.3 | + 3.5 | Percent |
November, 1989 | 35 | -2.3 | Percent |
December, 1989 | 39.6 | + 4.6 | Percent |
January, 1990 | 43.2 | + 3.6 | Percent |
February, 1990 | 38.9 | -4.3 | Percent |
March, 1990 | 36.8 | -2.1 | Percent |
April, 1990 | 33.8 | -3 | Percent |
May, 1990 | 32.2 | -1.6 | Percent |
June, 1990 | 31.3 | -0.9 | Percent |
July, 1990 | 33 | + 1.7 | Percent |
August, 1990 | 33.4 | + 0.4 | Percent |
September, 1990 | 32.6 | -0.8 | Percent |
October, 1990 | 32.8 | + 0.2 | Percent |
November, 1990 | 35.7 | + 2.9 | Percent |
December, 1990 | 37.8 | + 2.1 | Percent |
January, 1991 | 36.8 | -1 | Percent |
February, 1991 | 36.4 | -0.4 | Percent |
March, 1991 | 36.3 | -0.1 | Percent |
April, 1991 | 33.3 | -3 | Percent |
May, 1991 | 32.4 | -0.9 | Percent |
June, 1991 | 31.3 | -1.1 | Percent |
July, 1991 | 29.2 | -2.1 | Percent |
August, 1991 | 31.9 | + 2.7 | Percent |
September, 1991 | 29.4 | -2.5 | Percent |
October, 1991 | 29.2 | -0.2 | Percent |
November, 1991 | 32.8 | + 3.6 | Percent |
December, 1991 | 32.3 | -0.5 | Percent |
January, 1992 | 31.8 | -0.5 | Percent |
February, 1992 | 31.4 | -0.4 | Percent |
March, 1992 | 29.9 | -1.5 | Percent |
April, 1992 | 31.3 | + 1.4 | Percent |
May, 1992 | 29.8 | -1.5 | Percent |
June, 1992 | 28 | -1.8 | Percent |
July, 1992 | 27.4 | -0.6 | Percent |
August, 1992 | 28.6 | + 1.2 | Percent |
September, 1992 | 29.3 | + 0.7 | Percent |
October, 1992 | 31.4 | + 2.1 | Percent |
November, 1992 | 30.8 | -0.6 | Percent |
December, 1992 | 32.5 | + 1.7 | Percent |
January, 1993 | 32.6 | + 0.1 | Percent |
February, 1993 | 32.9 | + 0.3 | Percent |
March, 1993 | 32 | -0.9 | Percent |
April, 1993 | 30.7 | -1.3 | Percent |
May, 1993 | 29.6 | -1.1 | Percent |
June, 1993 | 27.4 | -2.2 | Percent |
July, 1993 | 28.3 | + 0.9 | Percent |
August, 1993 | 27.6 | -0.7 | Percent |
September, 1993 | 27 | -0.6 | Percent |
October, 1993 | 28.1 | + 1.1 | Percent |
November, 1993 | 29.8 | + 1.7 | Percent |
December, 1993 | 29.5 | -0.3 | Percent |
January, 1994 | 27.9 | -1.6 | Percent |
February, 1994 | 30 | + 2.1 | Percent |
March, 1994 | 28.6 | -1.4 | Percent |
April, 1994 | 26.7 | -1.9 | Percent |
May, 1994 | 25.6 | -1.1 | Percent |
June, 1994 | 23.3 | -2.3 | Percent |
July, 1994 | 23.9 | + 0.6 | Percent |
August, 1994 | 23.5 | -0.4 | Percent |
September, 1994 | 22 | -1.5 | Percent |
October, 1994 | 23.7 | + 1.7 | Percent |
November, 1994 | 24.1 | + 0.4 | Percent |
December, 1994 | 25.8 | + 1.7 | Percent |
January, 1995 | 27.3 | + 1.5 | Percent |
February, 1995 | 27.4 | + 0.099999999999998 | Percent |
March, 1995 | 26.5 | -0.9 | Percent |
April, 1995 | 25.4 | -1.1 | Percent |
May, 1995 | 23.6 | -1.8 | Percent |
June, 1995 | 24.5 | + 0.9 | Percent |
July, 1995 | 22.2 | -2.3 | Percent |
August, 1995 | 21.8 | -0.4 | Percent |
September, 1995 | 22 | + 0.2 | Percent |
October, 1995 | 22.5 | + 0.5 | Percent |
November, 1995 | 24.7 | + 2.2 | Percent |
December, 1995 | 25 | + 0.3 | Percent |
January, 1996 | 22 | -3 | Percent |
February, 1996 | 22.7 | + 0.7 | Percent |
March, 1996 | 22.3 | -0.4 | Percent |
April, 1996 | 20.5 | -1.8 | Percent |
May, 1996 | 18.7 | -1.8 | Percent |
June, 1996 | 16.7 | -2 | Percent |
July, 1996 | 18.6 | + 1.9 | Percent |
August, 1996 | 17.4 | -1.2 | Percent |
September, 1996 | 16.9 | -0.5 | Percent |
October, 1996 | 17.2 | + 0.3 | Percent |
November, 1996 | 18.5 | + 1.3 | Percent |
December, 1996 | 20 | + 1.5 | Percent |
January, 1997 | 17.5 | -2.5 | Percent |
February, 1997 | 17.8 | + 0.3 | Percent |
March, 1997 | 17.9 | + 0.099999999999998 | Percent |
April, 1997 | 18 | + 0.1 | Percent |
May, 1997 | 17.6 | -0.4 | Percent |
June, 1997 | 17.5 | -0.1 | Percent |
July, 1997 | 17.6 | + 0.1 | Percent |
August, 1997 | 17.7 | + 0.099999999999998 | Percent |
September, 1997 | 17.4 | -0.3 | Percent |
October, 1997 | 17.7 | + 0.3 | Percent |
November, 1997 | 17.6 | -0.099999999999998 | Percent |
December, 1997 | 17.7 | + 0.099999999999998 | Percent |
January, 1998 | 16.8 | -0.9 | Percent |
February, 1998 | 16.7 | -0.1 | Percent |
March, 1998 | 17.3 | + 0.6 | Percent |
April, 1998 | 15.8 | -1.5 | Percent |
May, 1998 | 14.9 | -0.9 | Percent |
June, 1998 | 15.1 | + 0.2 | Percent |
July, 1998 | 13.1 | -2 | Percent |
August, 1998 | 13.8 | + 0.7 | Percent |
September, 1998 | 14.2 | + 0.4 | Percent |
October, 1998 | 14.8 | + 0.6 | Percent |
November, 1998 | 15.7 | + 0.9 | Percent |
December, 1998 | 17.2 | + 1.5 | Percent |
January, 1999 | 16.9 | -0.3 | Percent |
February, 1999 | 16.8 | -0.099999999999998 | Percent |
March, 1999 | 17.4 | + 0.6 | Percent |
April, 1999 | 16.6 | -0.8 | Percent |
May, 1999 | 16 | -0.6 | Percent |
June, 1999 | 15.8 | -0.2 | Percent |
July, 1999 | 15.7 | -0.1 | Percent |
August, 1999 | 18.9 | + 3.2 | Percent |
September, 1999 | 17.6 | -1.3 | Percent |
October, 1999 | 17.5 | -0.1 | Percent |
November, 1999 | 17.7 | + 0.2 | Percent |
December, 1999 | 21.2 | + 3.5 | Percent |
January, 2000 | 18.7 | -2.5 | Percent |
February, 2000 | 19.4 | + 0.7 | Percent |
March, 2000 | 18.2 | -1.2 | Percent |
April, 2000 | 18 | -0.2 | Percent |
May, 2000 | 17 | -1 | Percent |
June, 2000 | 18.1 | + 1.1 | Percent |
July, 2000 | 17.6 | -0.5 | Percent |
August, 2000 | 17.1 | -0.5 | Percent |
September, 2000 | 16.5 | -0.6 | Percent |
October, 2000 | 16.6 | + 0.1 | Percent |
November, 2000 | 19.8 | + 3.2 | Percent |
December, 2000 | 20.4 | + 0.6 | Percent |
January, 2001 | 23.5 | + 3.1 | Percent |
February, 2001 | 23.2 | -0.3 | Percent |
March, 2001 | 22 | -1.2 | Percent |
April, 2001 | 21 | -1 | Percent |
May, 2001 | 19.5 | -1.5 | Percent |
June, 2001 | 19.2 | -0.3 | Percent |
July, 2001 | 20.2 | + 1 | Percent |
August, 2001 | 19.6 | -0.6 | Percent |
September, 2001 | 19.8 | + 0.2 | Percent |
October, 2001 | 20.3 | + 0.5 | Percent |
November, 2001 | 20.2 | -0.1 | Percent |
December, 2001 | 20.7 | + 0.5 | Percent |
January, 2002 | 20.3 | -0.4 | Percent |
February, 2002 | 20.5 | + 0.2 | Percent |
March, 2002 | 20.2 | -0.3 | Percent |
April, 2002 | 26.3 | + 6.1 | Percent |
May, 2002 | 23.9 | -2.4 | Percent |
June, 2002 | 25.5 | + 1.6 | Percent |
July, 2002 | 24 | -1.5 | Percent |
August, 2002 | 22.5 | -1.5 | Percent |
September, 2002 | 22.5 | 0 | Percent |
October, 2002 | 21.7 | -0.8 | Percent |
November, 2002 | 21.8 | + 0.1 | Percent |
December, 2002 | 23.1 | + 1.3 | Percent |
January, 2003 | 21.4 | -1.7 | Percent |
February, 2003 | 22.1 | + 0.7 | Percent |
March, 2003 | 21.3 | -0.8 | Percent |
April, 2003 | 20.9 | -0.4 | Percent |
May, 2003 | 20.3 | -0.6 | Percent |
June, 2003 | 19.1 | -1.2 | Percent |
July, 2003 | 24.7 | + 5.6 | Percent |
August, 2003 | 22.9 | -1.8 | Percent |
September, 2003 | 22.9 | 0 | Percent |
October, 2003 | 23.3 | + 0.4 | Percent |
November, 2003 | 22.7 | -0.6 | Percent |
December, 2003 | 23.5 | + 0.8 | Percent |
January, 2004 | 23.1 | -0.4 | Percent |
February, 2004 | 23.6 | + 0.5 | Percent |
March, 2004 | 22.8 | -0.8 | Percent |
April, 2004 | 23.3 | + 0.5 | Percent |
May, 2004 | 23.4 | + 0.099999999999998 | Percent |
June, 2004 | 25 | + 1.6 | Percent |
July, 2004 | 24.9 | -0.1 | Percent |
August, 2004 | 24 | -0.9 | Percent |
September, 2004 | 22.8 | -1.2 | Percent |
October, 2004 | 22.6 | -0.2 | Percent |
November, 2004 | 23.5 | + 0.9 | Percent |
December, 2004 | 24.5 | + 1 | Percent |
January, 2005 | 24.8 | + 0.3 | Percent |
February, 2005 | 24.3 | -0.5 | Percent |
March, 2005 | 24.6 | + 0.3 | Percent |
April, 2005 | 23.9 | -0.7 | Percent |
May, 2005 | 24.2 | + 0.3 | Percent |
June, 2005 | 23.7 | -0.5 | Percent |
July, 2005 | 24.5 | + 0.8 | Percent |
August, 2005 | 24.6 | + 0.1 | Percent |
September, 2005 | 23.2 | -1.4 | Percent |
October, 2005 | 23.2 | 0 | Percent |
November, 2005 | 23.4 | + 0.2 | Percent |
December, 2005 | 23.7 | + 0.3 | Percent |
January, 2006 | 23.7 | 0 | Percent |
February, 2006 | 23.7 | 0 | Percent |
March, 2006 | 23.8 | + 0.1 | Percent |
April, 2006 | 23.5 | -0.3 | Percent |
May, 2006 | 23.8 | + 0.3 | Percent |
June, 2006 | 23.3 | -0.5 | Percent |
July, 2006 | 23.6 | + 0.3 | Percent |
August, 2006 | 23.7 | + 0.099999999999998 | Percent |
September, 2006 | 22 | -1.7 | Percent |
October, 2006 | 22.9 | + 0.9 | Percent |
November, 2006 | 23 | + 0.1 | Percent |
December, 2006 | 23.4 | + 0.4 | Percent |
January, 2007 | 22.7 | -0.7 | Percent |
February, 2007 | 23 | + 0.3 | Percent |
March, 2007 | 22.4 | -0.6 | Percent |
April, 2007 | 22.3 | -0.099999999999998 | Percent |
May, 2007 | 23.2 | + 0.9 | Percent |
June, 2007 | 23.8 | + 0.6 | Percent |
July, 2007 | 22.1 | -1.7 | Percent |
August, 2007 | 22.3 | + 0.2 | Percent |
September, 2007 | 21.2 | -1.1 | Percent |
October, 2007 | 21.3 | + 0.1 | Percent |
November, 2007 | 20.8 | -0.5 | Percent |
December, 2007 | 21.4 | + 0.6 | Percent |
January, 2008 | 20.5 | -0.9 | Percent |
February, 2008 | 20.5 | 0 | Percent |
March, 2008 | 21.4 | + 0.9 | Percent |
April, 2008 | 21.9 | + 0.5 | Percent |
May, 2008 | 21.3 | -0.6 | Percent |
June, 2008 | 20.8 | -0.5 | Percent |
July, 2008 | 20.7 | -0.1 | Percent |
August, 2008 | 20.4 | -0.3 | Percent |
September, 2008 | 19.1 | -1.3 | Percent |
October, 2008 | 18.9 | -0.2 | Percent |
November, 2008 | 19.6 | + 0.7 | Percent |
December, 2008 | 19.8 | + 0.2 | Percent |
January, 2009 | 20.1 | + 0.3 | Percent |
February, 2009 | 19.9 | -0.2 | Percent |
March, 2009 | 19.4 | -0.5 | Percent |
April, 2009 | 18.6 | -0.8 | Percent |
May, 2009 | 19 | + 0.4 | Percent |
June, 2009 | 18.7 | -0.3 | Percent |
July, 2009 | 18.6 | -0.099999999999998 | Percent |
August, 2009 | 18.3 | -0.3 | Percent |
September, 2009 | 18 | -0.3 | Percent |
October, 2009 | 17.9 | -0.1 | Percent |
November, 2009 | 17.8 | -0.099999999999998 | Percent |
December, 2009 | 18.9 | + 1.1 | Percent |
January, 2010 | 18.3 | -0.6 | Percent |
February, 2010 | 17.8 | -0.5 | Percent |
March, 2010 | 17.6 | -0.2 | Percent |
April, 2010 | 17 | -0.6 | Percent |
May, 2010 | 17.1 | + 0.1 | Percent |
June, 2010 | 17.3 | + 0.2 | Percent |
July, 2010 | 17.5 | + 0.2 | Percent |
August, 2010 | 17 | -0.5 | Percent |
September, 2010 | 16.7 | -0.3 | Percent |
October, 2010 | 16.1 | -0.6 | Percent |
November, 2010 | 16.9 | + 0.8 | Percent |
December, 2010 | 17.1 | + 0.2 | Percent |
January, 2011 | 16.8 | -0.3 | Percent |
February, 2011 | 16.6 | -0.2 | Percent |
March, 2011 | 16.6 | 0 | Percent |
April, 2011 | 16 | -0.6 | Percent |
May, 2011 | 16.3 | + 0.3 | Percent |
June, 2011 | 15.9 | -0.4 | Percent |
July, 2011 | 16.5 | + 0.6 | Percent |
August, 2011 | 16 | -0.5 | Percent |
September, 2011 | 15.8 | -0.2 | Percent |
October, 2011 | 15.9 | + 0.1 | Percent |
November, 2011 | 16.2 | + 0.3 | Percent |
December, 2011 | 16.6 | + 0.4 | Percent |
January, 2012 | 16.1 | -0.5 | Percent |
February, 2012 | 16.2 | + 0.099999999999998 | Percent |
March, 2012 | 16 | -0.2 | Percent |
April, 2012 | 15.5 | -0.5 | Percent |
May, 2012 | 15.6 | + 0.1 | Percent |
June, 2012 | 15.6 | 0 | Percent |
July, 2012 | 16.1 | + 0.5 | Percent |
August, 2012 | 16.6 | + 0.5 | Percent |
September, 2012 | 16.5 | -0.1 | Percent |
October, 2012 | 16.3 | -0.2 | Percent |
November, 2012 | 16.9 | + 0.6 | Percent |
December, 2012 | 17 | + 0.1 | Percent |
January, 2013 | 17 | 0 | Percent |
February, 2013 | 17 | 0 | Percent |
March, 2013 | 16.8 | -0.2 | Percent |
April, 2013 | 16.8 | 0 | Percent |
May, 2013 | 16.2 | -0.6 | Percent |
June, 2013 | 16 | -0.2 | Percent |
July, 2013 | 15.8 | -0.2 | Percent |
August, 2013 | 15.9 | + 0.1 | Percent |
September, 2013 | 16.3 | + 0.4 | Percent |
October, 2013 | 16.6 | + 0.3 | Percent |
November, 2013 | 16.9 | + 0.3 | Percent |
December, 2013 | 17.2 | + 0.3 | Percent |
January, 2014 | 15.5 | -1.7 | Percent |
February, 2014 | 16.1 | + 0.6 | Percent |
March, 2014 | 15.8 | -0.3 | Percent |
April, 2014 | 14.9 | -0.9 | Percent |
May, 2014 | 14.8 | -0.1 | Percent |
June, 2014 | 14.5 | -0.3 | Percent |
July, 2014 | 14.7 | + 0.2 | Percent |
August, 2014 | 14.3 | -0.4 | Percent |
September, 2014 | 13.9 | -0.4 | Percent |
October, 2014 | 13.7 | -0.2 | Percent |
November, 2014 | 14.7 | + 1 | Percent |
December, 2014 | 15 | + 0.3 | Percent |
January, 2015 | 14.8 | -0.2 | Percent |
February, 2015 | 15.2 | + 0.4 | Percent |
March, 2015 | 15.4 | + 0.2 | Percent |
April, 2015 | 14.6 | -0.8 | Percent |
May, 2015 | 15.1 | + 0.5 | Percent |
June, 2015 | 14.6 | -0.5 | Percent |
July, 2015 | 14.6 | 0 | Percent |
August, 2015 | 14.3 | -0.3 | Percent |
September, 2015 | 14.5 | + 0.2 | Percent |
October, 2015 | 14.7 | + 0.2 | Percent |
November, 2015 | 14.8 | + 0.1 | Percent |
December, 2015 | 14.9 | + 0.1 | Percent |
January, 2016 | 15.4 | + 0.5 | Percent |
February, 2016 | 15.8 | + 0.4 | Percent |
March, 2016 | 15.5 | -0.3 | Percent |
April, 2016 | 14.6 | -0.9 | Percent |
May, 2016 | 14.7 | + 0.1 | Percent |
June, 2016 | 14.7 | 0 | Percent |
July, 2016 | 14.3 | -0.4 | Percent |
August, 2016 | 14.7 | + 0.4 | Percent |
September, 2016 | 14.6 | -0.1 | Percent |
October, 2016 | 14.5 | -0.1 | Percent |
November, 2016 | 14.6 | + 0.1 | Percent |
December, 2016 | 15 | + 0.4 | Percent |
January, 2017 | 15.2 | + 0.2 | Percent |
February, 2017 | 15.2 | 0 | Percent |
March, 2017 | 15.1 | -0.1 | Percent |
April, 2017 | 14.7 | -0.4 | Percent |
May, 2017 | 14.2 | -0.5 | Percent |
June, 2017 | 14.8 | + 0.6 | Percent |
July, 2017 | 14.8 | 0 | Percent |
August, 2017 | 14.4 | -0.4 | Percent |
September, 2017 | 13.9 | -0.5 | Percent |
October, 2017 | 14.4 | + 0.5 | Percent |
November, 2017 | 14.8 | + 0.4 | Percent |
December, 2017 | 15.2 | + 0.4 | Percent |
January, 2018 | 15.2 | 0 | Percent |
February, 2018 | 14.8 | -0.4 | Percent |
March, 2018 | 15.3 | + 0.5 | Percent |
April, 2018 | 15 | -0.3 | Percent |
May, 2018 | 14.1 | -0.9 | Percent |
June, 2018 | 14.1 | 0 | Percent |
July, 2018 | 13.9 | -0.2 | Percent |
August, 2018 | 14.2 | + 0.3 | Percent |
September, 2018 | 14 | -0.2 | Percent |
October, 2018 | 14.3 | + 0.3 | Percent |
November, 2018 | 14.5 | + 0.2 | Percent |
December, 2018 | 14.5 | 0 | Percent |
January, 2019 | 13.7 | -0.8 | Percent |
February, 2019 | 14.1 | + 0.4 | Percent |
March, 2019 | 13.7 | -0.4 | Percent |
April, 2019 | 13 | -0.7 | Percent |
May, 2019 | 12.6 | -0.4 | Percent |
June, 2019 | 12.4 | -0.2 | Percent |
July, 2019 | 13 | + 0.6 | Percent |
August, 2019 | 12.3 | -0.7 | Percent |
September, 2019 | 12.2 | -0.1 | Percent |
October, 2019 | 12 | -0.2 | Percent |
November, 2019 | 12.7 | + 0.7 | Percent |
December, 2019 | 12.8 | + 0.1 | Percent |
January, 2020 | 13.1 | + 0.3 | Percent |
February, 2020 | 13.2 | + 0.1 | Percent |
March, 2020 | 13 | -0.2 | Percent |
April, 2020 | 12.8 | -0.2 | Percent |
May, 2020 | 13.2 | + 0.4 | Percent |
June, 2020 | 12.9 | -0.3 | Percent |
July, 2020 | 12.8 | -0.1 | Percent |
August, 2020 | 12.4 | -0.4 | Percent |
September, 2020 | 13.2 | + 0.8 | Percent |
October, 2020 | 13 | -0.2 | Percent |
November, 2020 | 13.2 | + 0.2 | Percent |
December, 2020 | 13.7 | + 0.5 | Percent |
January, 2021 | 13.4 | -0.3 | Percent |
February, 2021 | 12.6 | -0.8 | Percent |
March, 2021 | 13.6 | + 1 | Percent |
Year | Year Open - Year Close | Year Min - Year Max | Year Average | Year Change |
---|---|---|---|---|
2021 | 13.4 - 13.6 | 12.6 - 13.6 | 13.2 | + 0.2 |
2020 | 13.1 - 13.7 | 12.4 - 13.7 | 13.04 | + 0.6 |
2019 | 13.7 - 12.8 | 12 - 14.1 | 12.88 | -0.9 |
2018 | 15.2 - 14.5 | 13.9 - 15.3 | 14.49 | -0.7 |
2017 | 15.2 - 15.2 | 13.9 - 15.2 | 14.73 | 0 |
2016 | 15.4 - 15 | 14.3 - 15.8 | 14.87 | -0.4 |
2015 | 14.8 - 14.9 | 14.3 - 15.4 | 14.79 | + 0.1 |
2014 | 15.5 - 15 | 13.7 - 16.1 | 14.83 | -0.5 |
2013 | 17 - 17.2 | 15.8 - 17.2 | 16.54 | + 0.2 |
2012 | 16.1 - 17 | 15.5 - 17 | 16.2 | + 0.9 |
2011 | 16.8 - 16.6 | 15.8 - 16.8 | 16.27 | -0.2 |
2010 | 18.3 - 17.1 | 16.1 - 18.3 | 17.2 | -1.2 |
2009 | 20.1 - 18.9 | 17.8 - 20.1 | 18.77 | -1.2 |
2008 | 20.5 - 19.8 | 18.9 - 21.9 | 20.41 | -0.7 |
2007 | 22.7 - 21.4 | 20.8 - 23.8 | 22.21 | -1.3 |
2006 | 23.7 - 23.4 | 22 - 23.8 | 23.37 | -0.3 |
2005 | 24.8 - 23.7 | 23.2 - 24.8 | 24.01 | -1.1 |
2004 | 23.1 - 24.5 | 22.6 - 25 | 23.63 | + 1.4 |
2003 | 21.4 - 23.5 | 19.1 - 24.7 | 22.09 | + 2.1 |
2002 | 20.3 - 23.1 | 20.2 - 26.3 | 22.69 | + 2.8 |
2001 | 23.5 - 20.7 | 19.2 - 23.5 | 20.77 | -2.8 |
2000 | 18.7 - 20.4 | 16.5 - 20.4 | 18.12 | + 1.7 |
1999 | 16.9 - 21.2 | 15.7 - 21.2 | 17.34 | + 4.3 |
1998 | 16.8 - 17.2 | 13.1 - 17.3 | 15.45 | + 0.4 |
1997 | 17.5 - 17.7 | 17.4 - 18 | 17.67 | + 0.2 |
1996 | 22 - 20 | 16.7 - 22.7 | 19.29 | -2 |
1995 | 27.3 - 25 | 21.8 - 27.4 | 24.41 | -2.3 |
1994 | 27.9 - 25.8 | 22 - 30 | 25.43 | -2.1 |
1993 | 32.6 - 29.5 | 27 - 32.9 | 29.63 | -3.1 |
1992 | 31.8 - 32.5 | 27.4 - 32.5 | 30.18 | + 0.7 |
1991 | 36.8 - 32.3 | 29.2 - 36.8 | 32.61 | -4.5 |
1990 | 43.2 - 37.8 | 31.3 - 43.2 | 35.13 | -5.4 |
1989 | 41.1 - 39.6 | 32.8 - 41.1 | 36.78 | -1.5 |
1988 | 48.8 - 44.4 | 37.9 - 48.8 | 42.37 | -4.4 |