Year | Value | 2021 | 1,210.8868870626 | 2020 | 1,093.8858011959 | 2019 | 1,038.1853790985 | 2018 | 1,060.9516409656 | 2017 | 973.66139211747 | 2016 | 941.67274861381 | 2015 | 933.9750394493 | 2014 | 1,117.7821306007 | 2013 | 1,079.2872642121 | 2012 | 974.42549722289 | 2011 | 954.06281062893 | 2010 | 866.93051395398 | 2009 | 915.40881186593 | 2008 | 955.80686965881 | 2007 | 820.49144202255 | 2006 | 725.53372908759 | 2005 | 698.74481270697 | 2004 | 674.34843719002 | 2003 | 597.68376765214 | 2002 | 478.63385738957 | 2001 | 422.04400551314 | 2000 | 407.3200920824 | 1999 | 434.25742223068 | 1998 | 279.87995672387 | 1997 | 262.72143600102 | 1996 | 276.60261145774 | 1995 | 261.89883622172 | 1994 | 198.80230060144 | 1993 | 320.41626970026 | 1992 | 238.58045905781 | 1991 | 308.02416805734 | 1990 | 312.63929254818 | 1989 | 245.54009363681 | 1988 | 283.02134930115 | 1987 | 280.876149249 | 1986 | 246.55815247348 | 1985 | 200.55628029053 | 1984 | 199.63610827718 | 1983 | 218.04905003938 | 1982 | 258.26357987718 | 1981 | 286.30248963455 | 1980 | 317.95843703434 | 1979 | 277.02860149756 | 1978 | 215.19774723517 | 1977 | 175.08212256085 | 1976 | 175.50158558328 | 1975 | 174.33460967287 | 1974 | 149.23384704259 | 1973 | 138.09204266766 | 1972 | 116.80649392014 | 1971 | 96.595523306622 |
|