Year | Value | 2021 | 1,702.4824798981 | 2020 | 1,744.1803904398 | 2019 | 1,845.208813072 | 2018 | 1,756.2010584238 | 2017 | 1,661.47539768 | 2016 | 1,877.4123127024 | 2015 | 2,322.3248495128 | 2014 | 2,695.9131081978 | 2013 | 2,425.0538098779 | 2012 | 2,184.5028328624 | 2011 | 1,955.0337895135 | 2010 | 1,823.0902466718 | 2009 | 1,579.9240544652 | 2008 | 1,804.75705467 | 2007 | 1,532.324726349 | 2006 | 1,380.0944653808 | 2005 | 955.6629639714 | 2004 | 777.16701683874 | 2003 | 627.73064648556 | 2002 | 600.28763975659 | 2001 | 459.06447586957 | 2000 | 408.99076074748 | 1999 | 422.11141458654 | 1998 | 389.1119408439 | 1997 | 380.50159932454 | 1996 | 359.18964382757 | 1995 | 315.5189511995 | 1994 | 238.39421034713 | 1993 | 180.02135300533 | 1992 | 361.79661496416 | 1991 | 392.54871681048 | 1990 | 413.57200787323 | 1989 | 352.75937247925 | 1988 | 470.35550949925 | 1987 | 486.76305989329 | 1986 | 542.31435859401 | 1985 | 733.09082803723 | 1984 | 769.04159491866 | 1983 | 1,063.6104024158 | 1982 | 1,625.5396666224 | 1981 | 1,887.1873693591 | 1980 | 599.05511296842 | 1979 | 405.62683429114 | 1978 | 422.01347504011 | 1977 | 409.07221865921 | 1976 | 433.61418402617 | 1975 | 339.12081377509 | 1974 | 279.27108484594 | 1973 | 209.10756552585 | 1972 | 175.15437629929 | 1971 | 137.16612240979 | 1970 | 198.23947093808 |
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