Year | Value | 2014 | 317.24536995553 | 2013 | 299.48035040078 | 2012 | 281.44399594218 | 2011 | 263.98198986819 | 2010 | 245.90417086832 | 2009 | 224.84300490209 | 2008 | 205.93266800126 | 2007 | 203.99493161782 | 2006 | 194.58197760872 | 2005 | 173.731814879 | 2004 | 163.16049332903 | 2003 | 127.76989281849 | 2002 | 121.46280851743 | 2001 | 113.76125874953 | 2000 | 103.3644717579 | 1999 | 95.964789474206 | 1998 | 87.623311052839 | 1997 | 82.457094573838 | 1996 | 80.415848035002 | 1995 | 76.489894530368 | 1994 | 69.307681135988 | 1993 | 65.368376414141 | 1992 | 58.622061439983 | 1991 | 48.735462135667 | 1990 | 47.93385531149 | 1989 | 48.563462463904 | 1988 | 40.647068216269 | 1987 | 37.506123976836 | 1986 | 35.971682033613 | 1985 | 31.690585173168 | 1984 | 30.651877116357 | 1983 | 27.865195018252 | 1982 | 24.481867473237 | 1981 | 21.67028673817 | 1980 | 18.134210193487 | 1979 | 20.278812056202 | 1978 | 20.635552519731 | 1977 | 17.494736349588 | 1976 | 16.509540183776 | 1975 | 16.211437845434 | 1974 | 16.148532059367 | 1973 | 14.646182663648 | 1972 | 10.238410029719 | 1971 | 10.383729403873 |
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