Year | Value | 2014 | 519.55188873237 | 2013 | 512.12024216066 | 2012 | 509.53633240516 | 2011 | 491.04152433709 | 2010 | 450.63620067913 | 2009 | 417.67409283555 | 2008 | 420.05077186856 | 2007 | 415.36646752484 | 2006 | 399.53286008056 | 2005 | 397.48161342565 | 2004 | 352.48066089457 | 2003 | 324.920557131 | 2002 | 302.34360246327 | 2001 | 290.69344922312 | 2000 | 294.83865652207 | 1999 | 262.92940203619 | 1998 | 249.23497362559 | 1997 | 230.09223798876 | 1996 | 204.99379287964 | 1995 | 216.53056854898 | 1994 | 200.59134751193 | 1993 | 183.55612046061 | 1992 | 167.15408593865 | 1991 | 158.75662500296 | 1990 | 152.52183579095 | 1989 | 139.3125306236 | 1988 | 142.06733669828 | 1987 | 138.09033694586 | 1986 | 137.45561265339 | 1985 | 128.81906905013 | 1984 | 118.82128528972 | 1983 | 115.65646186255 | 1982 | 110.3068363099 | 1981 | 100.99403128565 | 1980 | 95.358260986526 | 1979 | 89.779649541936 | 1978 | 81.721473239755 | 1977 | 75.146273917209 | 1976 | 73.111974907568 | 1975 | 71.434463307973 | 1974 | 67.445326061261 | 1973 | 66.895792983565 | 1972 | 64.656222092807 | 1971 | 58.081412122705 |
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