| Year | Value | | 2022 | 11,493,494 | | 2021 | 11,177,371 | | 2020 | 10,900,369 | | 2019 | 10,685,410 | | 2018 | 10,531,690 | | 2017 | 10,432,549 | | 2016 | 10,424,064 | | 2015 | 10,465,535 | | 2014 | 10,454,163 | | 2013 | 10,379,737 | | 2012 | 10,256,437 | | 2011 | 10,046,537 | | 2010 | 9,754,935 | | 2009 | 9,428,854 | | 2008 | 9,118,638 | | 2007 | 8,832,793 | | 2006 | 8,554,848 | | 2005 | 8,275,577 | | 2004 | 7,983,580 | | 2003 | 7,686,928 | | 2002 | 7,418,401 | | 2001 | 7,130,229 | | 2000 | 6,791,835 | | 1999 | 6,493,597 | | 1998 | 6,250,831 | | 1997 | 6,021,119 | | 1996 | 5,805,264 | | 1995 | 5,596,239 | | 1994 | 5,420,303 | | 1993 | 5,274,619 | | 1992 | 5,198,065 | | 1991 | 5,140,940 | | 1990 | 5,034,614 | | 1989 | 4,934,306 | | 1988 | 4,831,563 | | 1987 | 4,714,562 | | 1986 | 4,592,827 | | 1985 | 4,469,057 | | 1984 | 4,365,030 | | 1983 | 4,263,720 | | 1982 | 4,111,053 | | 1981 | 3,904,799 | | 1980 | 3,665,625 | | 1979 | 3,448,270 | | 1978 | 3,275,159 | | 1977 | 3,119,737 | | 1976 | 2,968,323 | | 1975 | 2,821,992 | | 1974 | 2,693,305 | | 1973 | 2,596,167 | | 1972 | 2,537,028 | | 1971 | 2,517,528 | | 1970 | 2,520,195 | | 1969 | 2,527,094 | | 1968 | 2,532,134 | | 1967 | 2,521,825 | | 1966 | 2,493,743 | | 1965 | 2,458,330 | | 1964 | 2,416,770 | | 1963 | 2,367,098 | | 1962 | 2,315,022 | | 1961 | 2,267,207 | | 1960 | 2,217,218 |
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