| Year | Value | | 2022 | 14,768,462 | | 2021 | 14,331,741 | | 2020 | 13,898,393 | | 2019 | 13,456,671 | | 2018 | 13,015,522 | | 2017 | 12,583,507 | | 2016 | 12,167,612 | | 2015 | 11,771,832 | | 2014 | 11,397,449 | | 2013 | 11,046,500 | | 2012 | 10,716,915 | | 2011 | 10,402,594 | | 2010 | 10,093,486 | | 2009 | 9,768,247 | | 2008 | 9,442,307 | | 2007 | 9,149,904 | | 2006 | 8,886,487 | | 2005 | 8,639,818 | | 2004 | 8,422,960 | | 2003 | 8,221,461 | | 2002 | 8,000,536 | | 2001 | 7,769,403 | | 2000 | 7,545,297 | | 1999 | 7,336,561 | | 1998 | 7,149,055 | | 1997 | 6,982,743 | | 1996 | 6,820,990 | | 1995 | 6,657,938 | | 1994 | 6,516,164 | | 1993 | 6,388,128 | | 1992 | 6,254,197 | | 1991 | 6,129,102 | | 1990 | 6,011,296 | | 1989 | 5,888,185 | | 1988 | 5,766,476 | | 1987 | 5,645,417 | | 1986 | 5,521,806 | | 1985 | 5,389,166 | | 1984 | 5,250,204 | | 1983 | 5,115,684 | | 1982 | 4,983,672 | | 1981 | 4,855,614 | | 1980 | 4,748,048 | | 1979 | 4,647,667 | | 1978 | 4,531,134 | | 1977 | 4,415,741 | | 1976 | 4,308,143 | | 1975 | 4,200,821 | | 1974 | 4,093,094 | | 1973 | 3,988,175 | | 1972 | 3,887,956 | | 1971 | 3,792,288 | | 1970 | 3,699,940 | | 1969 | 3,611,942 | | 1968 | 3,528,696 | | 1967 | 3,449,180 | | 1966 | 3,372,960 | | 1965 | 3,297,488 | | 1964 | 3,222,421 | | 1963 | 3,149,536 | | 1962 | 3,079,065 | | 1961 | 3,010,934 | | 1960 | 2,946,636 |
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