Year | Value | 2014 | 701.9408629914 | 2013 | 731.93420193114 | 2012 | 719.31136008716 | 2011 | 620.99505853644 | 2010 | 582.58047404867 | 2009 | 564.04497132358 | 2008 | 589.35812947766 | 2007 | 669.56548312528 | 2006 | 716.44756279608 | 2005 | 710.16794827784 | 2004 | 707.36250496065 | 2003 | 689.05873819763 | 2002 | 672.51639514463 | 2001 | 649.0407540686 | 2000 | 629.25027014086 | 1999 | 617.28022942578 | 1998 | 613.28812271737 | 1997 | 670.74295019159 | 1996 | 719.2750318776 | 1995 | 744.23071497622 | 1994 | 765.61654789068 | 1993 | 775.12566018979 | 1992 | 770.09418853833 | 1991 | 771.02039397163 | 1990 | 796.60168653704 | 1989 | 814.14712448815 | 1988 | 972.6739622926 | 1987 | 918.51022912017 | 1986 | 933.83120250032 | 1985 | 981.83654732131 | 1984 | 1,026.4990894059 | 1983 | 1,066.2733048591 | 1982 | 1,086.8819262043 | 1981 | 1,101.9959199529 | 1980 | 1,061.1075585471 | 1979 | 1,065.4615085149 | 1978 | 1,082.8446652094 | 1977 | 1,122.4292472119 | 1976 | 1,179.8005855496 | 1975 | 1,157.9216543314 | 1974 | 1,184.1626648191 | 1973 | 1,111.9017108114 | 1972 | 1,057.7902772162 | 1971 | 1,002.5184554534 |
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