Year | Value | 2022 | 24,284,886 | 2021 | 24,391,916 | 2020 | 24,422,741 | 2019 | 24,404,204 | 2018 | 24,329,811 | 2017 | 24,234,261 | 2016 | 24,163,166 | 2015 | 24,116,884 | 2014 | 24,072,458 | 2013 | 24,009,548 | 2012 | 23,931,115 | 2011 | 23,831,052 | 2010 | 23,705,834 | 2009 | 23,602,327 | 2008 | 23,504,774 | 2007 | 23,401,031 | 2006 | 23,269,758 | 2005 | 23,098,413 | 2004 | 22,883,641 | 2003 | 22,634,779 | 2002 | 22,351,066 | 2001 | 22,039,719 | 2000 | 21,718,224 | 1999 | 21,383,417 | 1998 | 21,053,998 | 1997 | 20,745,614 | 1996 | 20,445,934 | 1995 | 20,146,443 | 1994 | 19,840,231 | 1993 | 19,526,908 | 1992 | 19,216,257 | 1991 | 18,924,108 | 1990 | 18,650,230 | 1989 | 18,398,473 | 1988 | 18,165,003 | 1987 | 17,918,679 | 1986 | 17,635,055 | 1985 | 17,300,386 | 1984 | 16,915,291 | 1983 | 16,492,715 | 1982 | 16,051,704 | 1981 | 15,605,561 | 1980 | 15,152,990 | 1979 | 14,696,956 | 1978 | 14,247,267 | 1977 | 13,807,683 | 1976 | 13,386,642 | 1975 | 12,982,653 | 1974 | 12,585,978 | 1973 | 12,184,054 | 1972 | 11,767,397 | 1971 | 11,341,893 | 1970 | 10,913,759 | 1969 | 10,491,927 | 1968 | 10,103,463 | 1967 | 9,768,326 | 1966 | 9,479,583 | 1965 | 9,219,410 | 1964 | 8,973,584 | 1963 | 8,738,085 | 1962 | 8,509,074 | 1961 | 8,292,543 | 1960 | 8,101,240 |
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