Year | Value | 2021 | 2,050.3507056459 | 2020 | 1,844.3110209027 | 2019 | 1,938.033257177 | 2018 | 1,880.54012477 | 2017 | 1,874.4748627536 | 2016 | 1,779.7362096919 | 2015 | 1,719.7498054222 | 2014 | 1,757.078421643 | 2013 | 1,676.1115096007 | 2012 | 1,659.4133489199 | 2011 | 1,590.0295009954 | 2010 | 1,425.9970807482 | 2009 | 1,220.4500815357 | 2008 | 1,185.9239086528 | 2007 | 1,087.5167163832 | 2006 | 892.43030534276 | 2005 | 769.91535561749 | 2004 | 679.10779169279 | 2003 | 597.90482876503 | 2002 | 536.51217769987 | 2001 | 517.41484817698 | 2000 | 506.86483012541 | 1999 | 510.73167430323 | 1998 | 496.18619428788 | 1997 | 500.6153795725 | 1996 | 487.68301262855 | 1995 | 446.71414213378 | 1994 | 396.71209291643 | 1993 | 365.79691419879 | 1992 | 378.47597325425 | 1991 | 369.48494886988 | 1990 | 404.14985324793 | 1989 | 388.84662522024 | 1988 | 404.06416303596 | 1987 | 406.71248661845 | 1986 | 431.70128037047 | 1985 | 407.50788797018 | 1984 | 392.74134757234 | 1983 | 413.30287489518 | 1982 | 424.58917442138 | 1981 | 421.65333770509 | 1980 | 343.87412400523 | 1979 | 289.50858743431 | 1978 | 262.39218926189 | 1977 | 242.50501450082 | 1976 | 219.68676034907 | 1975 | 206.93663893752 | 1974 | 188.34470490803 | 1973 | 156.10313372173 | 1972 | 133.50749822511 | 1971 | 123.90375893684 | 1970 | 120.34911501581 |
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