| Year | Value | | 2022 | 8,848,699 | | 2021 | 8,644,829 | | 2020 | 8,442,580 | | 2019 | 8,243,094 | | 2018 | 8,046,679 | | 2017 | 7,852,795 | | 2016 | 7,661,354 | | 2015 | 7,473,229 | | 2014 | 7,288,383 | | 2013 | 7,106,229 | | 2012 | 6,926,635 | | 2011 | 6,748,672 | | 2010 | 6,571,855 | | 2009 | 6,398,624 | | 2008 | 6,222,482 | | 2007 | 6,047,537 | | 2006 | 5,874,240 | | 2005 | 5,711,597 | | 2004 | 5,565,218 | | 2003 | 5,421,001 | | 2002 | 5,281,538 | | 2001 | 5,145,426 | | 2000 | 5,008,035 | | 1999 | 4,867,941 | | 1998 | 4,728,297 | | 1997 | 4,592,550 | | 1996 | 4,445,883 | | 1995 | 4,279,566 | | 1994 | 4,092,612 | | 1993 | 4,078,392 | | 1992 | 4,106,219 | | 1991 | 3,990,215 | | 1990 | 3,875,947 | | 1989 | 3,763,657 | | 1988 | 3,653,420 | | 1987 | 3,544,927 | | 1986 | 3,439,370 | | 1985 | 3,336,508 | | 1984 | 3,232,244 | | 1983 | 3,126,635 | | 1982 | 3,023,343 | | 1981 | 2,925,865 | | 1980 | 2,838,110 | | 1979 | 2,761,240 | | 1978 | 2,693,400 | | 1977 | 2,630,626 | | 1976 | 2,569,671 | | 1975 | 2,509,713 | | 1974 | 2,450,335 | | 1973 | 2,390,909 | | 1972 | 2,330,704 | | 1971 | 2,267,211 | | 1970 | 2,197,383 | | 1969 | 2,120,486 | | 1968 | 2,038,765 | | 1967 | 1,957,164 | | 1966 | 1,882,458 | | 1965 | 1,820,396 | | 1964 | 1,772,652 | | 1963 | 1,736,697 | | 1962 | 1,706,841 | | 1961 | 1,678,788 | | 1960 | 1,651,367 |
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