| Year | Value | | 2021 | 877,794.064 | | 2020 | 714,804.484 | | 2019 | 1,427,588 | | 2018 | 1,476,056.363 | | 2017 | 1,313,166 | | 2016 | 1,173,973 | | 2015 | 1,026,248 | | 2014 | 966,479.12 | | 2013 | 900,742.4 | | 2012 | 864,800.1922051 | | 2011 | 894,201.03177502 | | 2010 | 799,070.00466147 | | 2009 | 700,428 | | 2008 | 691,007 | | 2007 | 666,865 | | 2006 | 548,761 | | 2005 | 419,742 | | 2004 | 391,577 | | 2003 | 338,691 | | 2002 | 299,963 | | 2001 | 294,067 | | 2000 | 296,548 | | 1999 | 291,800 | | 1998 | 323,400 | | 1997 | 314,700 | | 1996 | 284,100 | | 1995 | 298,700 | | 1994 | 257,300 | | 1993 | 228,400 | | 1992 | 242,700 | | 1991 | 234,900 | | 1990 | 245,300 | | 1989 | 272,600 | | 1988 | 268,700 | | 1987 | 257,800 | | 1986 | 250,800 | | 1985 | 235,900 | | 1984 | 209,400 | | 1983 | 199,800 | | 1982 | 187,700 | | 1981 | 184,400 | | 1980 | 185,200 | | 1979 | 184,000 | | 1978 | 183,600 | | 1977 | 175,000 | | 1976 | 166,600 | | 1975 | 158,000 | | 1974 | 129,200 | | 1973 | 150,700 | | 1972 | 140,800 | | 1971 | 120,100 | | 1970 | 162,000 |
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