Year | Value | 2021 | 1,675,777 | 2020 | 1,381,745 | 2019 | 4,335,325 | 2018 | 4,274,199 | 2017 | 3,963,968 | 2016 | 3,606,247 | 2015 | 3,496,190 | 2014 | 4,628,511 | 2013 | 4,648,608 | 2012 | 3,580,910.2187347 | 2011 | 3,153,388.9766099 | 2010 | 2,739,634 | 2009 | 2,278,964 | 2008 | 2,274,580 | 2007 | 2,054,679 | 2006 | 2,054,641 | 2005 | 1,996,699 | 2004 | 1,940,037 | 2003 | 1,719,524 | 2002 | 1,789,327 | 2001 | 1,926,118 | 2000 | 1,907,876 | 1999 | 1,922,600 | 1998 | 1,859,000 | 1997 | 1,779,300 | 1996 | 1,371,200 | 1995 | 1,419,400 | 1994 | 1,390,800 | 1993 | 1,351,000 | 1992 | 1,249,900 | 1991 | 1,201,200 | 1990 | 1,313,000 | 1989 | 1,315,400 | 1988 | 1,210,300 | 1987 | 1,203,300 | 1986 | 1,054,800 | 1985 | 1,281,600 | 1984 | 1,254,900 | 1983 | 1,258,100 | 1982 | 1,209,100 | 1981 | 1,140,900 | 1980 | 978,200 | 1979 | 1,088,800 | 1978 | 963,000 | 1977 | 855,500 | 1976 | 809,300 | 1975 | 782,000 | 1974 | 629,600 | 1973 | 485,600 | 1972 | 375,100 | 1971 | 308,900 | 1970 | 244,800 |
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