Year | Value | 2021 | 669,298 | 2020 | 455,830.6 | 2019 | 2,033,146 | 2018 | 1,950,049 | 2017 | 1,822,880 | 2016 | 1,572,605 | 2015 | 1,525,922 | 2014 | 1,427,414 | 2013 | 1,498,996 | 2012 | 1,770,111.378347 | 2011 | 1,829,514.9470822 | 2010 | 1,697,893.8890269 | 2009 | 932,581 | 2008 | 1,023,665 | 2007 | 1,017,054 | 2006 | 943,143 | 2005 | 953,217 | 2004 | 901,402 | 2003 | 749,885 | 2002 | 675,146 | 2001 | 737,895 | 2000 | 877,833 | 1999 | 1,055,300 | 1998 | 1,169,500 | 1997 | 991,500 | 1996 | 917,900 | 1995 | 870,400 | 1994 | 773,200 | 1993 | 690,300 | 1992 | 622,800 | 1991 | 507,600 | 1990 | 467,000 | 1989 | 440,800 | 1988 | 400,600 | 1987 | 347,600 | 1986 | 334,700 | 1985 | 310,000 | 1984 | 322,500 | 1983 | 379,600 | 1982 | 458,600 | 1981 | 427,600 | 1980 | 431,200 | 1979 | 366,000 | 1978 | 321,300 | 1977 | 326,800 | 1976 | 390,500 | 1975 | 371,800 | 1974 | 374,300 | 1973 | 314,400 | 1972 | 307,300 | 1971 | 280,400 | 1970 | 255,900 |
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