Year | Value | 2022 | 23,588,209 | 2021 | 23,739,929 | 2020 | 23,885,275 | 2019 | 24,028,065 | 2018 | 24,165,632 | 2017 | 24,276,018 | 2016 | 24,342,611 | 2015 | 24,392,372 | 2014 | 24,436,899 | 2013 | 24,464,541 | 2012 | 24,475,668 | 2011 | 24,475,650 | 2010 | 24,455,155 | 2009 | 24,436,782 | 2008 | 24,401,204 | 2007 | 24,355,625 | 2006 | 24,292,777 | 2005 | 24,211,235 | 2004 | 24,120,315 | 2003 | 24,027,492 | 2002 | 23,925,266 | 2001 | 23,791,915 | 2000 | 23,617,147 | 1999 | 23,390,039 | 1998 | 23,116,123 | 1997 | 22,808,236 | 1996 | 22,485,273 | 1995 | 22,162,710 | 1994 | 21,840,903 | 1993 | 21,535,517 | 1992 | 21,243,856 | 1991 | 20,946,223 | 1990 | 20,627,028 | 1989 | 20,288,238 | 1988 | 19,944,519 | 1987 | 19,610,256 | 1986 | 19,307,431 | 1985 | 19,043,718 | 1984 | 18,811,446 | 1983 | 18,588,723 | 1982 | 18,346,457 | 1981 | 18,061,346 | 1980 | 17,714,392 | 1979 | 17,303,042 | 1978 | 16,852,184 | 1977 | 16,386,033 | 1976 | 15,917,721 | 1975 | 15,454,495 | 1974 | 14,997,179 | 1973 | 14,546,362 | 1972 | 14,103,707 | 1971 | 13,673,536 | 1970 | 13,259,464 | 1969 | 12,862,130 | 1968 | 12,463,560 | 1967 | 12,045,013 | 1966 | 11,611,805 | 1965 | 11,172,420 | 1964 | 10,739,222 | 1963 | 10,341,616 | 1962 | 9,999,309 | 1961 | 9,703,271 | 1960 | 9,433,766 |
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