Year | Value | 2021 | 24,572,955 | 2020 | 23,346,254 | 2019 | 76,850,596.719 | 2018 | 75,667,645.034751 | 2017 | 74,257,326 | 2016 | 72,446,421 | 2015 | 69,779,346 | 2014 | 68,123,237.669317 | 2013 | 68,197,955 | 2012 | 66,355,274 | 2011 | 63,360,310.337766 | 2010 | 60,640,913 | 2009 | 50,026,967 | 2008 | 51,488,427 | 2007 | 48,728,837 | 2006 | 46,951,775 | 2005 | 44,657,324 | 2004 | 41,596,552 | 2003 | 41,386,432 | 2002 | 39,021,581 | 2001 | 33,477,398 | 2000 | 32,577,569 | 1999 | 31,579,700 | 1998 | 30,185,700 | 1997 | 30,953,500 | 1996 | 30,075,100 | 1995 | 28,831,400 | 1994 | 26,888,500 | 1993 | 26,929,300 | 1992 | 23,886,600 | 1991 | 21,860,100 | 1990 | 17,553,400 | 1989 | 15,114,300 | 1988 | 18,816,300 | 1987 | 16,880,200 | 1986 | 15,497,300 | 1985 | 14,412,100 | 1984 | 13,236,800 | 1983 | 12,601,500 | 1982 | 13,187,900 | 1981 | 13,219,500 | 1980 | 13,648,800 | 1979 | 13,022,500 | 1978 | 12,122,300 | 1977 | 11,306,500 | 1976 | 10,864,300 | 1975 | 11,055,100 | 1974 | 10,664,700 | 1973 | 9,384,600 | 1972 | 7,795,600 | 1971 | 7,326,600 | 1970 | 7,318,700 |
|