Year | Value | 2014 | 339.19274255207 | 2013 | 363.40719512823 | 2012 | 331.21407457276 | 2011 | 305.31244804375 | 2010 | 268.8592590206 | 2009 | 251.97627230784 | 2008 | 253.10276987828 | 2007 | 233.71542142168 | 2006 | 284.08665361594 | 2005 | 235.40967840486 | 2004 | 210.62295642323 | 2003 | 212.00670582555 | 2002 | 298.43446913783 | 2001 | 324.82359875135 | 2000 | 319.74774912942 | 1999 | 347.86842073838 | 1998 | 265.19248924429 | 1997 | 379.18682026096 | 1996 | 354.0683960612 | 1995 | 341.01972409457 | 1994 | 326.68550531564 | 1993 | 325.22947363716 | 1992 | 338.20667832894 | 1991 | 322.53033441977 | 1990 | 309.44556030427 | 1989 | 292.0455391738 | 1988 | 288.03796593941 | 1987 | 271.89274666178 | 1986 | 243.20622241474 | 1985 | 152.5846022285 | 1984 | 86.265776387865 | 1983 | 151.72366945466 | 1982 | 343.82266601065 | 1981 | 380.90683994707 | 1980 | 387.77114271377 | 1979 | 366.19651040864 | 1978 | 307.16916161362 | 1977 | 377.90416254368 | 1976 | 372.72792498168 | 1975 | 363.37465552866 | 1974 | 386.83416912164 | 1973 | 380.60859397188 | 1972 | 336.43136330402 | 1971 | 303.44022611786 |
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