Year | Value | 2014 | 2,585.6625426971 | 2013 | 2,452.2962287515 | 2012 | 2,343.9724094571 | 2011 | 2,328.0059677538 | 2010 | 2,300.3168203312 | 2009 | 2,274.8692953831 | 2008 | 2,241.9242980948 | 2007 | 2,184.9217117814 | 2006 | 2,054.0856745086 | 2005 | 1,996.6126151941 | 2004 | 1,867.5079754479 | 2003 | 1,708.3463963347 | 2002 | 1,742.7230830259 | 2001 | 1,755.5199527777 | 2000 | 1,672.5277361214 | 1999 | 1,400.5530673867 | 1998 | 1,547.7769802079 | 1997 | 1,169.1987848766 | 1996 | 1,434.2865871535 | 1995 | 1,555.3788450023 | 1994 | 1,661.7320386921 | 1993 | 2,052.237047517 | 1992 | 1,984.7854340741 | 1991 | 2,179.6115006036 | 1990 | 2,260.5837520744 |
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