Year | Value | 2022 | 42,241,130 | 2021 | 41,093,879 | 2020 | 39,910,117 | 2019 | 38,491,229 | 2018 | 36,771,984 | 2017 | 34,954,902 | 2016 | 33,267,081 | 2015 | 31,649,998 | 2014 | 30,113,684 | 2013 | 28,877,978 | 2012 | 27,944,352 | 2011 | 27,108,823 | 2010 | 26,377,500 | 2009 | 25,764,209 | 2008 | 25,236,752 | 2007 | 24,764,288 | 2006 | 24,303,526 | 2005 | 23,816,957 | 2004 | 23,298,875 | 2003 | 22,750,397 | 2002 | 22,185,906 | 2001 | 21,635,286 | 2000 | 21,117,672 | 1999 | 20,624,041 | 1998 | 20,143,534 | 1997 | 19,660,468 | 1996 | 19,161,719 | 1995 | 18,664,149 | 1994 | 18,179,063 | 1993 | 17,682,477 | 1992 | 17,170,830 | 1991 | 16,661,726 | 1990 | 16,165,367 | 1989 | 15,693,233 | 1988 | 15,258,098 | 1987 | 14,845,656 | 1986 | 14,458,933 | 1985 | 14,102,977 | 1984 | 13,780,613 | 1983 | 13,486,711 | 1982 | 13,209,571 | 1981 | 12,940,540 | 1980 | 12,681,823 | 1979 | 12,427,053 | 1978 | 12,172,729 | 1977 | 11,922,111 | 1976 | 11,649,966 | 1975 | 11,351,276 | 1974 | 11,044,134 | 1973 | 10,725,509 | 1972 | 10,400,780 | 1971 | 10,117,796 | 1970 | 9,869,723 | 1969 | 9,625,314 | 1968 | 9,401,965 | 1967 | 9,196,275 | 1966 | 8,975,483 | 1965 | 8,717,852 | 1964 | 8,411,956 | 1963 | 8,052,038 | 1962 | 7,671,004 | 1961 | 7,323,576 | 1960 | 7,051,710 |
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