| Year | Value | | 2022 | 13,352,864 | | 2021 | 12,996,895 | | 2020 | 12,643,123 | | 2019 | 12,290,444 | | 2018 | 11,940,683 | | 2017 | 11,596,779 | | 2016 | 11,260,085 | | 2015 | 10,932,783 | | 2014 | 10,614,844 | | 2013 | 10,308,730 | | 2012 | 10,014,078 | | 2011 | 9,726,380 | | 2010 | 9,445,710 | | 2009 | 9,172,514 | | 2008 | 8,906,469 | | 2007 | 8,647,761 | | 2006 | 8,402,631 | | 2005 | 8,149,419 | | 2004 | 7,894,554 | | 2003 | 7,659,208 | | 2002 | 7,431,783 | | 2001 | 7,212,041 | | 2000 | 6,998,023 | | 1999 | 6,788,589 | | 1998 | 6,584,183 | | 1997 | 6,387,026 | | 1996 | 6,203,860 | | 1995 | 6,046,511 | | 1994 | 5,923,394 | | 1993 | 5,706,181 | | 1992 | 5,457,778 | | 1991 | 5,293,046 | | 1990 | 5,133,419 | | 1989 | 4,979,680 | | 1988 | 4,831,624 | | 1987 | 4,688,787 | | 1986 | 4,551,382 | | 1985 | 4,419,552 | | 1984 | 4,293,070 | | 1983 | 4,171,526 | | 1982 | 4,054,385 | | 1981 | 3,941,569 | | 1980 | 3,833,939 | | 1979 | 3,732,394 | | 1978 | 3,636,927 | | 1977 | 3,546,454 | | 1976 | 3,460,329 | | 1975 | 3,378,703 | | 1974 | 3,301,276 | | 1973 | 3,227,380 | | 1972 | 3,156,408 | | 1971 | 3,088,381 | | 1970 | 3,023,443 | | 1969 | 2,961,166 | | 1968 | 2,901,218 | | 1967 | 2,843,739 | | 1966 | 2,788,642 | | 1965 | 2,735,843 | | 1964 | 2,685,619 | | 1963 | 2,638,082 | | 1962 | 2,593,302 | | 1961 | 2,551,216 | | 1960 | 2,512,284 |
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