| Year | Value | | 2022 | 4,452,023 | | 2021 | 4,436,133 | | 2020 | 4,413,152 | | 2019 | 4,312,734 | | 2018 | 4,240,881 | | 2017 | 4,162,127 | | 2016 | 4,072,982 | | 2015 | 3,979,802 | | 2014 | 3,896,881 | | 2013 | 3,830,023 | | 2012 | 3,798,063 | | 2011 | 3,774,624 | | 2010 | 3,748,563 | | 2009 | 3,709,702 | | 2008 | 3,675,355 | | 2007 | 3,646,829 | | 2006 | 3,615,494 | | 2005 | 3,569,251 | | 2004 | 3,526,736 | | 2003 | 3,472,292 | | 2002 | 3,402,067 | | 2001 | 3,341,111 | | 2000 | 3,318,432 | | 1999 | 3,295,923 | | 1998 | 3,275,597 | | 1997 | 3,243,637 | | 1996 | 3,198,324 | | 1995 | 3,142,704 | | 1994 | 3,091,625 | | 1993 | 3,045,443 | | 1992 | 3,005,583 | | 1991 | 2,969,087 | | 1990 | 2,821,739 | | 1989 | 2,788,022 | | 1988 | 2,766,856 | | 1987 | 2,751,315 | | 1986 | 2,719,750 | | 1985 | 2,716,946 | | 1984 | 2,698,921 | | 1983 | 2,674,359 | | 1982 | 2,636,985 | | 1981 | 2,609,635 | | 1980 | 2,597,030 | | 1979 | 2,590,668 | | 1978 | 2,597,744 | | 1977 | 2,593,760 | | 1976 | 2,582,586 | | 1975 | 2,552,005 | | 1974 | 2,493,343 | | 1973 | 2,432,441 | | 1972 | 2,375,942 | | 1971 | 2,324,938 | | 1970 | 2,279,646 | | 1969 | 2,237,511 | | 1968 | 2,206,092 | | 1967 | 2,175,248 | | 1966 | 2,125,227 | | 1965 | 2,073,571 | | 1964 | 2,024,808 | | 1963 | 1,967,968 | | 1962 | 1,914,441 | | 1961 | 1,851,675 | | 1960 | 1,802,521 |
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