| Year | Value | | 2022 | 9,877,642 | | 2021 | 9,609,004 | | 2020 | 9,338,613 | | 2019 | 9,066,397 | | 2018 | 8,794,716 | | 2017 | 8,525,934 | | 2016 | 8,260,471 | | 2015 | 8,000,338 | | 2014 | 7,744,381 | | 2013 | 7,491,633 | | 2012 | 7,245,485 | | 2011 | 7,005,106 | | 2010 | 6,765,898 | | 2009 | 6,523,386 | | 2008 | 6,283,615 | | 2007 | 6,050,324 | | 2006 | 5,827,393 | | 2005 | 5,617,219 | | 2004 | 5,423,615 | | 2003 | 5,244,889 | | 2002 | 5,076,940 | | 2001 | 4,915,581 | | 2000 | 4,762,771 | | 1999 | 4,628,537 | | 1998 | 4,506,907 | | 1997 | 4,390,939 | | 1996 | 4,279,880 | | 1995 | 4,177,093 | | 1994 | 4,078,851 | | 1993 | 3,984,327 | | 1992 | 3,893,512 | | 1991 | 3,803,803 | | 1990 | 3,713,668 | | 1989 | 3,622,798 | | 1988 | 3,530,581 | | 1987 | 3,436,631 | | 1986 | 3,339,079 | | 1985 | 3,240,896 | | 1984 | 3,146,196 | | 1983 | 3,051,724 | | 1982 | 2,954,389 | | 1981 | 2,860,593 | | 1980 | 2,776,308 | | 1979 | 2,697,887 | | 1978 | 2,622,187 | | 1977 | 2,548,568 | | 1976 | 2,477,113 | | 1975 | 2,408,160 | | 1974 | 2,342,257 | | 1973 | 2,279,597 | | 1972 | 2,220,019 | | 1971 | 2,163,519 | | 1970 | 2,109,732 | | 1969 | 2,052,222 | | 1968 | 1,989,150 | | 1967 | 1,926,564 | | 1966 | 1,866,095 | | 1965 | 1,807,590 | | 1964 | 1,751,316 | | 1963 | 1,696,940 | | 1962 | 1,644,170 | | 1961 | 1,593,349 | | 1960 | 1,544,463 |
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