| Year | Value | | 2022 | 6,552,761 | | 2021 | 6,309,750 | | 2020 | 6,038,773 | | 2019 | 5,810,613 | | 2018 | 5,627,225 | | 2017 | 5,449,547 | | 2016 | 5,277,466 | | 2015 | 5,123,648 | | 2014 | 4,993,160 | | 2013 | 4,878,024 | | 2012 | 4,771,393 | | 2011 | 4,664,736 | | 2010 | 4,554,452 | | 2009 | 4,441,607 | | 2008 | 4,329,273 | | 2007 | 4,215,682 | | 2006 | 4,100,363 | | 2005 | 3,981,931 | | 2004 | 3,859,248 | | 2003 | 3,733,781 | | 2002 | 3,607,302 | | 2001 | 3,480,623 | | 2000 | 3,290,236 | | 1999 | 3,104,086 | | 1998 | 2,924,043 | | 1997 | 2,751,336 | | 1996 | 2,585,980 | | 1995 | 2,427,515 | | 1994 | 2,273,846 | | 1993 | 2,126,523 | | 1992 | 1,983,678 | | 1991 | 1,848,006 | | 1990 | 1,736,848 | | 1989 | 1,635,181 | | 1988 | 1,542,215 | | 1987 | 1,455,834 | | 1986 | 1,373,969 | | 1985 | 1,295,547 | | 1984 | 1,220,654 | | 1983 | 1,149,079 | | 1982 | 1,081,526 | | 1981 | 1,018,234 | | 1980 | 950,223 | | 1979 | 886,275 | | 1978 | 826,773 | | 1977 | 771,464 | | 1976 | 720,218 | | 1975 | 672,604 | | 1974 | 628,172 | | 1973 | 586,649 | | 1972 | 547,932 | | 1971 | 511,634 | | 1970 | 494,551 | | 1969 | 478,389 | | 1968 | 462,896 | | 1967 | 447,887 | | 1966 | 433,574 | | 1965 | 419,775 | | 1964 | 406,554 | | 1963 | 393,893 | | 1962 | 381,814 | | 1961 | 370,139 | | 1960 | 353,844 |
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