Year | Value | 2021 | 34,449.730445731 | 2020 | 27,300.756548005 | 2019 | 32,487.002631187 | 2018 | 32,723.319649652 | 2017 | 32,295.700213548 | 2016 | 28,880.724625588 | 2015 | 28,471.856739033 | 2014 | 28,755.727539606 | 2013 | 28,221.659903004 | 2012 | 27,690.344414567 | 2011 | 29,312.917247028 | 2010 | 28,906.372066683 | 2009 | 34,070.615 | 2008 | 30,132.465 | 2007 | 30,725.412 | 2006 | 29,420.617 | 2005 | 28,167.902 | 2004 | 28,148.217 | 2003 | 25,603.637 | 2002 | 25,092.52 | 2001 | 24,634.249 | 2000 | 25,835.769 | 1999 | 22,885.819190148 | 1998 | 21,585.673831942 | 1997 | 22,106.000010565 | 1996 | 19,068.399782196 | 1995 | 18,264.899975784 | 1994 | 16,699.399787456 | 1993 | 14,663.599994958 | 1992 | 13,806.599869922 | 1991 | 13,458.300224304 | 1990 | 13,748.600199699 | 1989 | 13,146.100059509 | 1988 | 12,151.500118732 | 1987 | 11,127.90009594 | 1986 | 10,137.699859619 | 1985 | 9,283.8000421525 | 1984 | 8,868.2000122072 | 1983 | 7,841.3999240398 | 1982 | 6,969.9000866415 | 1981 | 6,705.4998912812 | 1980 | 6,432.4000697136 | 1979 | 6,271.4999799729 | 1978 | 5,740.5000731944 | 1977 | 5,273.4000034334 | 1976 | 4,523.0000457767 | 1975 | 3,870.3000203369 | 1974 | 3,908.8000000716 | 1973 | 3,424.7999713421 | 1972 | 2,845.4999845028 | 1971 | 2,444.500046134 | 1970 | 2,239.9000151159 |
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