| Year | Value | | 2022 | 13,822,326 | | 2021 | 13,417,894 | | 2020 | 13,012,462 | | 2019 | 12,608,136 | | 2018 | 12,208,687 | | 2017 | 11,833,122 | | 2016 | 11,491,715 | | 2015 | 11,159,302 | | 2014 | 10,808,112 | | 2013 | 10,437,361 | | 2012 | 10,074,013 | | 2011 | 9,747,254 | | 2010 | 9,445,236 | | 2009 | 9,154,916 | | 2008 | 8,879,497 | | 2007 | 8,604,565 | | 2006 | 8,309,448 | | 2005 | 7,996,152 | | 2004 | 7,685,480 | | 2003 | 7,384,150 | | 2002 | 7,093,403 | | 2001 | 6,837,759 | | 2000 | 6,618,375 | | 1999 | 6,412,962 | | 1998 | 6,219,685 | | 1997 | 6,036,376 | | 1996 | 5,840,705 | | 1995 | 5,621,111 | | 1994 | 5,393,899 | | 1993 | 5,164,965 | | 1992 | 4,948,277 | | 1991 | 4,750,036 | | 1990 | 4,575,893 | | 1989 | 4,368,165 | | 1988 | 4,178,044 | | 1987 | 3,992,786 | | 1986 | 3,818,934 | | 1985 | 3,673,111 | | 1984 | 3,560,850 | | 1983 | 3,471,591 | | 1982 | 3,405,094 | | 1981 | 3,362,068 | | 1980 | 3,324,513 | | 1979 | 3,280,061 | | 1978 | 3,240,279 | | 1977 | 3,201,585 | | 1976 | 3,143,820 | | 1975 | 3,080,300 | | 1974 | 3,022,737 | | 1973 | 2,960,244 | | 1972 | 2,893,332 | | 1971 | 2,826,386 | | 1970 | 2,759,613 | | 1969 | 2,691,020 | | 1968 | 2,619,968 | | 1967 | 2,547,947 | | 1966 | 2,476,687 | | 1965 | 2,408,593 | | 1964 | 2,344,420 | | 1963 | 2,282,288 | | 1962 | 2,222,454 | | 1961 | 2,167,291 | | 1960 | 2,113,258 |
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