Year | Value | 2014 | 597.29702167757 | 2013 | 619.23560919018 | 2012 | 601.8696404937 | 2011 | 629.82768408967 | 2010 | 599.93281811646 | 2009 | 578.39983406691 | 2008 | 619.34542526992 | 2007 | 748.31927346608 | 2006 | 859.57654561984 | 2005 | 881.08119648716 | 2004 | 845.82687718102 | 2003 | 872.81799641399 | 2002 | 876.12114302269 | 2001 | 872.97617374493 | 2000 | 901.41884746148 | 1999 | 935.26590895163 | 1998 | 891.3816710315 | 1997 | 924.45249908008 | 1996 | 895.49533640163 | 1995 | 854.19001075219 | 1994 | 806.45799999521 | 1993 | 757.57870509067 | 1992 | 806.37120646796 | 1991 | 881.11033006466 | 1990 | 892.63352894874 | 1989 | 911.3025278616 | 1988 | 883.29298144719 | 1987 | 902.50723040547 | 1986 | 892.68181253482 | 1985 | 955.98477190362 | 1984 | 846.45392481836 | 1983 | 898.43081157551 | 1982 | 955.42523534843 | 1981 | 967.55809544921 | 1980 | 992.20899623627 | 1979 | 962.46405220804 | 1978 | 907.26574503817 | 1977 | 956.91273761654 | 1976 | 1,040.9664672356 | 1975 | 978.66471556972 | 1974 | 903.86599204205 | 1973 | 868.58920946829 | 1972 | 845.13528490421 | 1971 | 663.75521751687 |
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