| Year | Value | | 2022 | 7,497,626 | | 2021 | 7,199,991 | | 2020 | 6,926,344 | | 2019 | 6,660,940 | | 2018 | 6,404,818 | | 2017 | 6,159,768 | | 2016 | 5,911,956 | | 2015 | 5,646,471 | | 2014 | 5,373,349 | | 2013 | 5,094,009 | | 2012 | 4,817,487 | | 2011 | 4,559,659 | | 2010 | 4,311,434 | | 2009 | 4,060,431 | | 2008 | 3,821,078 | | 2007 | 3,613,003 | | 2006 | 3,433,048 | | 2005 | 3,288,093 | | 2004 | 3,187,892 | | 2003 | 3,127,866 | | 2002 | 3,093,072 | | 2001 | 3,066,648 | | 2000 | 3,038,530 | | 1999 | 3,008,594 | | 1998 | 2,975,696 | | 1997 | 2,927,761 | | 1996 | 2,863,646 | | 1995 | 2,803,670 | | 1994 | 2,746,338 | | 1993 | 2,680,129 | | 1992 | 2,604,070 | | 1991 | 2,519,947 | | 1990 | 2,440,477 | | 1989 | 2,358,226 | | 1988 | 2,289,438 | | 1987 | 2,224,503 | | 1986 | 2,156,874 | | 1985 | 2,086,407 | | 1984 | 2,013,531 | | 1983 | 1,936,470 | | 1982 | 1,858,159 | | 1981 | 1,781,420 | | 1980 | 1,714,259 | | 1979 | 1,661,624 | | 1978 | 1,624,562 | | 1977 | 1,598,615 | | 1976 | 1,563,437 | | 1975 | 1,522,096 | | 1974 | 1,491,800 | | 1973 | 1,469,930 | | 1972 | 1,448,546 | | 1971 | 1,428,169 | | 1970 | 1,406,633 | | 1969 | 1,383,586 | | 1968 | 1,359,515 | | 1967 | 1,334,546 | | 1966 | 1,307,180 | | 1965 | 1,277,099 | | 1964 | 1,243,483 | | 1963 | 1,210,190 | | 1962 | 1,179,584 | | 1961 | 1,150,643 | | 1960 | 1,123,957 |
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