Year | Value | 2021 | 1,886.5667887132 | 2020 | 1,642.4275872836 | 2019 | 1,759.2505243631 | 2018 | 1,706.2718257461 | 2017 | 1,680.4588837688 | 2016 | 1,481.9063178488 | 2015 | 1,354.6570486517 | 2014 | 1,301.0724337555 | 2013 | 1,200.2661008544 | 2012 | 1,183.4840587149 | 2011 | 1,184.7704333943 | 2010 | 1,091.1343561765 | 2009 | 910.56257882884 | 2008 | 825.46180404988 | 2007 | 833.27004286097 | 2006 | 673.00023678119 | 2005 | 601.46460428002 | 2004 | 535.97779804212 | 2003 | 472.62303226488 | 2002 | 411.3673244329 | 2001 | 399.19123609756 | 2000 | 396.42506058981 | 1999 | 386.93671992127 | 1998 | 368.72966510245 | 1997 | 369.84065564103 | 1996 | 359.9916125903 | 1995 | 334.89625585862 | 1994 | 308.26861590635 | 1993 | 276.80493499689 | 1992 | 283.96922251413 | 1991 | 273.18351637332 | 1990 | 314.60234360577 | 1989 | 300.30634657857 | 1988 | 306.33617364226 | 1987 | 291.62564067158 | 1986 | 269.79948021075 | 1985 | 259.67674384379 | 1984 | 246.1361596188 | 1983 | 254.15892920071 | 1982 | 245.11677555867 | 1981 | 244.49752179649 | 1980 | 237.62075169812 | 1979 | 198.66944160276 | 1978 | 182.09981506864 | 1977 | 162.86401896347 | 1976 | 145.2060239325 | 1975 | 152.26480873644 | 1974 | 147.43184466646 | 1973 | 125.54024717445 | 1972 | 113.36964059524 | 1971 | 111.95250590226 | 1970 | 105.77218279481 |
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