Year | Value | 2014 | 310.08166847824 | 2013 | 278.80825495787 | 2012 | 218.55392179827 | 2011 | 206.68523261219 | 2010 | 206.38425864202 | 2009 | 189.31320935251 | 2008 | 172.41759245847 | 2007 | 133.23969888785 | 2006 | 144.62607018828 | 2005 | 109.19770074062 | 2004 | 87.474778416318 | 2003 | 95.837962007117 | 2002 | 86.034941832786 | 2001 | 82.636886379062 | 2000 | 75.27115610518 | 1999 | 71.893249173495 | 1998 | 73.27454710343 | 1997 | 69.328886960023 | 1996 | 51.170276743596 | 1995 | 49.380930608436 | 1994 | 50.809569521865 | 1993 | 52.154158488818 | 1992 | 53.591895892082 | 1991 | 54.54385919147 | 1990 | 53.260569813701 | 1989 | 53.673683932634 | 1988 | 55.242819315023 | 1987 | 56.760497910194 | 1986 | 58.455908469661 | 1985 | 60.577972024009 | 1984 | 52.1954204861 | 1983 | 63.276764050002 | 1982 | 60.354401042924 | 1981 | 58.622779445 | 1980 | 60.743954986088 | 1979 | 58.682979871987 | 1978 | 56.487797220389 | 1977 | 58.440646468035 | 1976 | 60.411901832724 | 1975 | 139.20659068556 | 1974 | 135.53852454703 | 1973 | 112.18823300493 | 1972 | 98.668741852562 | 1971 | 90.010618338951 |
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