Year | Value | 2014 | 2,848.9716576496 | 2013 | 2,747.5840874562 | 2012 | 2,749.7136812343 | 2011 | 2,666.7383778823 | 2010 | 2,463.8597580191 | 2009 | 2,291.627145363 | 2008 | 2,401.1255582169 | 2007 | 2,328.3551301951 | 2006 | 2,138.9857019629 | 2005 | 1,972.4632020943 | 2004 | 1,848.2164049813 | 2003 | 1,726.3159881076 | 2002 | 1,620.0291146172 | 2001 | 1,563.0130565979 | 2000 | 1,597.530986209 | 1999 | 1,500.8068423663 | 1998 | 1,462.7426455199 | 1997 | 1,383.1487284148 | 1996 | 1,274.1493965228 | 1995 | 1,176.2815995404 | 1994 | 1,098.3805865745 | 1993 | 1,070.8625767547 | 1992 | 1,003.9986468039 | 1991 | 928.57577493532 | 1990 | 894.94667452447 | 1989 | 843.17502882083 | 1988 | 781.32614015909 | 1987 | 745.72791783765 | 1986 | 676.44857333761 | 1985 | 639.53136808043 | 1984 | 595.59363585829 | 1983 | 539.65733152711 | 1982 | 528.4634898674 | 1981 | 504.26165649026 | 1980 | 479.90681985425 | 1979 | 471.88940821038 | 1978 | 461.88243015182 | 1977 | 443.71140144489 | 1976 | 403.4130418761 | 1975 | 343.06766310561 | 1974 | 298.15792666116 |
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