| Year | Value | | 2022 | 2,728,849 | | 2021 | 2,759,771 | | 2020 | 2,807,464 | | 2019 | 2,851,053 | | 2018 | 2,880,558 | | 2017 | 2,905,158 | | 2016 | 2,921,675 | | 2015 | 2,926,523 | | 2014 | 2,937,373 | | 2013 | 2,949,224 | | 2012 | 2,949,194 | | 2011 | 2,951,820 | | 2010 | 2,957,801 | | 2009 | 2,960,225 | | 2008 | 2,988,265 | | 2007 | 3,043,729 | | 2006 | 3,100,237 | | 2005 | 3,174,065 | | 2004 | 3,268,043 | | 2003 | 3,351,891 | | 2002 | 3,415,515 | | 2001 | 3,478,821 | | 2000 | 3,549,810 | | 1999 | 3,632,087 | | 1998 | 3,732,272 | | 1997 | 3,854,796 | | 1996 | 4,004,361 | | 1995 | 4,171,860 | | 1994 | 4,357,302 | | 1993 | 4,553,464 | | 1992 | 4,717,374 | | 1991 | 4,818,825 | | 1990 | 4,850,538 | | 1989 | 4,811,478 | | 1988 | 4,714,984 | | 1987 | 4,631,058 | | 1986 | 4,466,615 | | 1985 | 4,301,894 | | 1984 | 4,240,981 | | 1983 | 4,165,417 | | 1982 | 4,050,716 | | 1981 | 4,025,502 | | 1980 | 4,018,244 | | 1979 | 3,933,882 | | 1978 | 3,887,907 | | 1977 | 3,853,317 | | 1976 | 3,837,948 | | 1975 | 3,862,915 | | 1974 | 3,901,026 | | 1973 | 3,958,015 | | 1972 | 4,074,529 | | 1971 | 4,242,654 | | 1970 | 4,401,793 | | 1969 | 4,703,840 | | 1968 | 5,075,589 | | 1967 | 5,397,693 | | 1966 | 5,482,708 | | 1965 | 5,317,517 | | 1964 | 5,064,511 | | 1963 | 4,796,581 | | 1962 | 4,562,041 | | 1961 | 4,524,336 | | 1960 | 4,650,351 |
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