Year | Value | 2021 | 8,208,378 | 2020 | 3,074,172 | 2019 | 12,497,758 | 2018 | 12,631,703 | 2017 | 11,975,372 | 2016 | 13,285,098 | 2015 | 12,193,261 | 2014 | 11,812,712.838391 | 2013 | 11,656,416 | 2012 | 7,517,581.2770127 | 2011 | 6,380,080.1838697 | 2010 | 5,524,157.4296921 | 2009 | 6,348,000 | 2008 | 2,762,458 | 2007 | 2,473,261 | 2006 | 2,028,711 | 2005 | 1,795,958 | 2004 | 1,500,673 | 2003 | 1,416,071 | 2002 | 1,047,843 | 2001 | 1,114,727 | 2000 | 1,117,411 | 1999 | 932,500 | 1998 | 859,900 | 1997 | 772,200 | 1996 | 688,800 | 1995 | 661,200 | 1994 | 519,900 | 1993 | 320,500 | 1992 | 282,700 | 1991 | 342,700 | 1990 | 265,800 | 1989 | 372,500 | 1988 | 382,000 | 1987 | 370,800 | 1986 | 364,200 | 1985 | 390,300 | 1984 | 371,600 | 1983 | 323,400 | 1982 | 332,200 | 1981 | 309,200 | 1980 | 355,200 | 1979 | 381,300 | 1978 | 365,700 | 1977 | 347,400 | 1976 | 374,100 | 1975 | 357,100 | 1974 | 275,700 | 1973 | 217,500 | 1972 | 316,200 | 1971 | 337,200 | 1970 | 307,400 |
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