Year | Value | 2022 | 50,893,951 | 2021 | 49,730,757 | 2020 | 48,182,131 | 2019 | 45,988,193 | 2018 | 43,417,934 | 2017 | 40,451,460 | 2016 | 37,503,230 | 2015 | 34,845,641 | 2014 | 32,382,134 | 2013 | 30,409,972 | 2012 | 28,833,057 | 2011 | 27,677,108 | 2010 | 26,848,028 | 2009 | 26,217,607 | 2008 | 25,761,652 | 2007 | 25,449,454 | 2006 | 25,136,961 | 2005 | 24,880,127 | 2004 | 24,755,487 | 2003 | 24,649,449 | 2002 | 24,365,499 | 2001 | 23,831,861 | 2000 | 23,171,543 | 1999 | 22,465,357 | 1998 | 21,704,780 | 1997 | 20,977,186 | 1996 | 20,310,176 | 1995 | 19,684,341 | 1994 | 19,148,429 | 1993 | 18,600,618 | 1992 | 18,007,895 | 1991 | 17,531,006 | 1990 | 17,088,415 | 1989 | 16,542,412 | 1988 | 15,975,051 | 1987 | 15,519,218 | 1986 | 15,142,857 | 1985 | 14,772,894 | 1984 | 14,470,368 | 1983 | 14,248,231 | 1982 | 13,954,570 | 1981 | 13,559,287 | 1980 | 13,170,956 | 1979 | 12,807,064 | 1978 | 12,450,774 | 1977 | 12,157,476 | 1976 | 11,965,027 | 1975 | 11,798,417 | 1974 | 11,568,690 | 1973 | 11,317,257 | 1972 | 11,098,596 | 1971 | 10,847,345 | 1970 | 10,510,067 | 1969 | 10,107,203 | 1968 | 9,674,118 | 1967 | 9,271,831 | 1966 | 8,915,326 | 1965 | 8,631,915 | 1964 | 8,493,087 | 1963 | 8,436,169 | 1962 | 8,352,270 | 1961 | 8,284,296 | 1960 | 8,291,650 |
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