Year | Value | 2014 | 369.38543898819 | 2013 | 371.3637852297 | 2012 | 361.49215414911 | 2011 | 363.34958019744 | 2010 | 363.18257837571 | 2009 | 354.21075513995 | 2008 | 353.62905046555 | 2007 | 377.18880826832 | 2006 | 380.19253639093 | 2005 | 374.00231246968 | 2004 | 363.36520430581 | 2003 | 350.07382420529 | 2002 | 343.43001905221 | 2001 | 333.44731063331 | 2000 | 335.20477271924 | 1999 | 331.87303232886 | 1998 | 332.01015582696 | 1997 | 346.57065790253 | 1996 | 347.93743754379 | 1995 | 350.18007719828 | 1994 | 352.71315475747 | 1993 | 358.54596800379 | 1992 | 364.65692254691 | 1991 | 367.96440493939 | 1990 | 365.70045643783 | 1989 | 204.66533794027 | 1988 | 196.02347490481 | 1987 | 186.97244428252 | 1986 | 180.50149609617 | 1985 | 172.53370988189 | 1984 | 153.70778657273 | 1983 | 157.31450009759 | 1982 | 154.89827805997 | 1981 | 137.58136830125 | 1980 | 137.91283668288 | 1979 | 134.70150550335 | 1978 | 125.67788894919 | 1977 | 122.28278464791 | 1976 | 121.97394389815 | 1975 | 118.45409067365 | 1974 | 108.17738276151 | 1973 | 104.11216958999 | 1972 | 97.559224169821 | 1971 | 89.383969540829 |
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