Year | Value | 2022 | 26,962,566 | 2021 | 26,782,671 | 2020 | 26,606,176 | 2019 | 26,423,311 | 2018 | 26,244,290 | 2017 | 26,063,229 | 2016 | 25,872,492 | 2015 | 25,675,431 | 2014 | 25,476,524 | 2013 | 25,270,624 | 2012 | 25,061,327 | 2011 | 24,855,326 | 2010 | 24,658,341 | 2009 | 24,474,765 | 2008 | 24,326,716 | 2007 | 24,179,492 | 2006 | 24,004,090 | 2005 | 23,826,893 | 2004 | 23,639,855 | 2003 | 23,439,572 | 2002 | 23,224,582 | 2001 | 22,998,986 | 2000 | 22,768,081 | 1999 | 22,527,182 | 1998 | 22,272,745 | 1997 | 22,008,508 | 1996 | 21,741,026 | 1995 | 21,474,841 | 1994 | 21,207,605 | 1993 | 20,936,959 | 1992 | 20,664,015 | 1991 | 20,386,829 | 1990 | 20,097,501 | 1989 | 19,793,226 | 1988 | 19,483,683 | 1987 | 19,166,835 | 1986 | 18,837,035 | 1985 | 18,491,226 | 1984 | 18,129,840 | 1983 | 17,761,164 | 1982 | 17,419,302 | 1981 | 17,101,753 | 1980 | 16,778,339 | 1979 | 16,455,704 | 1978 | 16,136,562 | 1977 | 15,820,028 | 1976 | 15,512,415 | 1975 | 15,212,151 | 1974 | 14,914,517 | 1973 | 14,620,573 | 1972 | 14,312,546 | 1971 | 13,992,477 | 1970 | 13,676,103 | 1969 | 13,362,921 | 1968 | 13,054,539 | 1967 | 12,751,503 | 1966 | 12,457,211 | 1965 | 12,171,984 | 1964 | 11,896,365 | 1963 | 11,631,079 | 1962 | 11,373,626 | 1961 | 11,123,595 | 1960 | 10,880,547 |
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