| Year | Value | | 2022 | 7,722,729 | | 2021 | 7,484,272 | | 2020 | 7,322,827 | | 2019 | 7,191,218 | | 2018 | 7,157,291 | | 2017 | 7,142,701 | | 2016 | 7,127,848 | | 2015 | 7,102,974 | | 2014 | 7,081,368 | | 2013 | 7,056,281 | | 2012 | 7,040,523 | | 2011 | 7,010,843 | | 2010 | 6,950,890 | | 2009 | 6,821,251 | | 2008 | 6,696,356 | | 2007 | 6,594,283 | | 2006 | 6,448,537 | | 2005 | 6,332,118 | | 2004 | 6,251,398 | | 2003 | 6,092,870 | | 2002 | 5,953,615 | | 2001 | 5,876,733 | | 2000 | 5,771,874 | | 1999 | 5,657,163 | | 1998 | 5,579,491 | | 1997 | 5,526,877 | | 1996 | 5,449,592 | | 1995 | 5,361,780 | | 1994 | 5,262,666 | | 1993 | 5,149,740 | | 1992 | 5,008,060 | | 1991 | 4,836,036 | | 1990 | 4,672,919 | | 1989 | 4,535,906 | | 1988 | 4,414,909 | | 1987 | 4,287,469 | | 1986 | 4,173,001 | | 1985 | 4,056,307 | | 1984 | 3,937,088 | | 1983 | 3,843,115 | | 1982 | 3,715,672 | | 1981 | 3,587,659 | | 1980 | 3,485,241 | | 1979 | 3,377,477 | | 1978 | 3,253,007 | | 1977 | 3,115,914 | | 1976 | 2,991,791 | | 1975 | 2,861,422 | | 1974 | 2,732,716 | | 1973 | 2,638,849 | | 1972 | 2,561,657 | | 1971 | 2,472,309 | | 1970 | 2,368,871 | | 1969 | 2,265,797 | | 1968 | 2,169,137 | | 1967 | 2,081,625 | | 1966 | 2,002,458 | | 1965 | 1,923,525 | | 1964 | 1,842,892 | | 1963 | 1,769,622 | | 1962 | 1,705,335 | | 1961 | 1,640,941 | | 1960 | 1,574,181 |
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