| Year | Value | | 2022 | 9,768,306 | | 2021 | 9,465,961 | | 2020 | 9,185,988 | | 2019 | 8,903,726 | | 2018 | 8,626,875 | | 2017 | 8,374,459 | | 2016 | 8,143,067 | | 2015 | 7,914,802 | | 2014 | 7,669,746 | | 2013 | 7,423,023 | | 2012 | 7,205,318 | | 2011 | 7,012,241 | | 2010 | 6,829,579 | | 2009 | 6,661,891 | | 2008 | 6,499,236 | | 2007 | 6,315,990 | | 2006 | 6,118,768 | | 2005 | 5,925,761 | | 2004 | 5,743,271 | | 2003 | 5,577,414 | | 2002 | 5,426,488 | | 2001 | 5,283,442 | | 2000 | 5,146,886 | | 1999 | 5,021,093 | | 1998 | 4,904,315 | | 1997 | 4,796,637 | | 1996 | 4,696,042 | | 1995 | 4,606,437 | | 1994 | 4,547,315 | | 1993 | 4,499,278 | | 1992 | 4,431,226 | | 1991 | 4,348,045 | | 1990 | 4,263,767 | | 1989 | 4,181,620 | | 1988 | 4,102,594 | | 1987 | 4,023,784 | | 1986 | 3,941,844 | | 1985 | 3,862,877 | | 1984 | 3,784,052 | | 1983 | 3,708,137 | | 1982 | 3,629,882 | | 1981 | 3,542,095 | | 1980 | 3,470,760 | | 1979 | 3,397,679 | | 1978 | 3,300,418 | | 1977 | 3,206,339 | | 1976 | 3,119,803 | | 1975 | 3,035,143 | | 1974 | 2,953,765 | | 1973 | 2,877,318 | | 1972 | 2,805,934 | | 1971 | 2,737,198 | | 1970 | 2,669,415 | | 1969 | 2,603,359 | | 1968 | 2,538,652 | | 1967 | 2,476,070 | | 1966 | 2,415,416 | | 1965 | 2,354,981 | | 1964 | 2,295,023 | | 1963 | 2,235,755 | | 1962 | 2,177,519 | | 1961 | 2,121,470 | | 1960 | 2,069,785 |
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