Year | Value | 2014 | 3,105.385116821 | 2013 | 3,084.4797725248 | 2012 | 3,026.0994661338 | 2011 | 3,002.3538731565 | 2010 | 2,938.4241013935 | 2009 | 2,775.8568954692 | 2008 | 2,825.2139738415 | 2007 | 2,804.2843635536 | 2006 | 2,715.4185013126 | 2005 | 2,639.8145528689 | 2004 | 2,562.8364317861 | 2003 | 2,485.8875633342 | 2002 | 2,421.2235655857 | 2001 | 2,367.4664470131 | 2000 | 2,375.0054862563 | 1999 | 2,306.8946355552 | 1998 | 2,275.1201829259 | 1997 | 2,253.5939436443 | 1996 | 2,231.287407328 | 1995 | 2,192.7293120734 | 1994 | 2,159.5100237115 | 1993 | 2,136.7960580656 | 1992 | 2,130.0163207672 | 1991 | 2,146.7879527687 | 1990 | 2,121.8476306085 | 1989 | 1,892.1497062354 | 1988 | 1,855.152057244 | 1987 | 1,799.236387241 | 1986 | 1,739.0141485381 | 1985 | 1,714.8809486649 | 1984 | 1,675.6262029814 | 1983 | 1,603.8738138796 | 1982 | 1,566.5012118682 | 1981 | 1,592.2286853321 | 1980 | 1,583.4314772027 | 1979 | 1,566.5827940734 | 1978 | 1,521.7952894837 | 1977 | 1,469.8336608533 | 1976 | 1,424.2002736182 | 1975 | 1,353.5524679672 | 1974 | 1,344.4641223157 | 1973 | 1,344.7796373231 | 1972 | 1,271.3097092153 | 1971 | 1,197.5840905497 |
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