Year | Value | 2021 | 83,964,797 | 2020 | 68,959,633 | 2019 | 167,499,116 | 2018 | 164,035,637.545 | 2017 | 139,752,424 | 2016 | 119,577,835 | 2015 | 98,927,860 | 2014 | 82,718,882.88 | 2013 | 75,589,071 | 2012 | 72,151,828.889548 | 2011 | 73,996,912 | 2010 | 64,374,253.803896 | 2009 | 54,446,373 | 2008 | 49,877,935 | 2007 | 51,897,450 | 2006 | 40,288,794 | 2005 | 27,879,461 | 2004 | 23,934,074 | 2003 | 19,455,085 | 2002 | 17,633,019 | 2001 | 16,862,737 | 2000 | 17,299,483 | 1999 | 16,005,400 | 1998 | 16,521,000 | 1997 | 16,039,800 | 1996 | 13,394,600 | 1995 | 14,260,600 | 1994 | 11,518,400 | 1993 | 9,441,600 | 1992 | 11,127,100 | 1991 | 10,717,400 | 1990 | 10,862,200 | 1989 | 12,740,100 | 1988 | 12,863,100 | 1987 | 12,668,600 | 1986 | 11,785,200 | 1985 | 10,993,800 | 1984 | 10,125,700 | 1983 | 9,164,800 | 1982 | 8,391,700 | 1981 | 7,574,500 | 1980 | 6,603,100 | 1979 | 6,546,800 | 1978 | 6,099,600 | 1977 | 5,147,500 | 1976 | 4,534,000 | 1975 | 3,839,900 | 1974 | 3,037,300 | 1973 | 3,391,600 | 1972 | 3,285,800 | 1971 | 2,554,000 | 1970 | 2,671,600 |
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