Year | Value | 2021 | 1,386,967 | 2020 | 386,838 | 2019 | 530,001 | 2018 | 561,520 | 2017 | 557,792.04 | 2016 | 292,843 | 2015 | 496,177 | 2014 | 501,864 | 2013 | 541,644 | 2012 | 777,346.33192403 | 2011 | 947,031.45611315 | 2010 | 580,325 | 2009 | 606,558 | 2008 | 617,785 | 2007 | 598,151 | 2006 | 563,026 | 2005 | 510,977 | 2004 | 473,127 | 2003 | 420,498 | 2002 | 409,178 | 2001 | 414,983 | 2000 | 414,179 | 1999 | 390,300 | 1998 | 498,700 | 1997 | 333,100 | 1996 | 490,800 | 1995 | 496,900 | 1994 | 432,400 | 1993 | 407,900 | 1992 | 480,000 | 1991 | 363,200 | 1990 | 454,100 | 1989 | 363,200 | 1988 | 533,700 | 1987 | 417,200 | 1986 | 347,400 | 1985 | 428,000 | 1984 | 485,000 | 1983 | 473,000 | 1982 | 477,600 | 1981 | 465,300 | 1980 | 519,000 | 1979 | 424,000 | 1978 | 176,000 | 1977 | 378,500 | 1976 | 328,300 | 1975 | 250,000 | 1974 | 244,700 | 1973 | 221,500 | 1972 | 133,400 | 1971 | 139,500 | 1970 | 124,700 |
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