| Year | Value | | 2022 | 7,579,726 | | 2021 | 7,668,316 | | 2020 | 7,791,513 | | 2019 | 7,899,108 | | 2018 | 7,979,748 | | 2017 | 8,032,269 | | 2016 | 8,081,041 | | 2015 | 8,136,690 | | 2014 | 8,201,791 | | 2013 | 8,273,192 | | 2012 | 8,327,986 | | 2011 | 8,354,557 | | 2010 | 8,383,708 | | 2009 | 8,363,543 | | 2008 | 8,324,051 | | 2007 | 8,270,566 | | 2006 | 8,235,457 | | 2005 | 8,227,839 | | 2004 | 8,221,305 | | 2003 | 8,196,542 | | 2002 | 8,167,524 | | 2001 | 8,141,314 | | 2000 | 8,108,830 | | 1999 | 8,076,796 | | 1998 | 8,088,479 | | 1997 | 8,155,319 | | 1996 | 8,250,448 | | 1995 | 8,374,674 | | 1994 | 8,517,766 | | 1993 | 8,634,226 | | 1992 | 8,690,587 | | 1991 | 8,756,656 | | 1990 | 8,811,212 | | 1989 | 8,828,951 | | 1988 | 8,854,327 | | 1987 | 8,922,150 | | 1986 | 9,038,620 | | 1985 | 9,176,219 | | 1984 | 9,317,000 | | 1983 | 9,440,742 | | 1982 | 9,537,302 | | 1981 | 9,614,459 | | 1980 | 9,689,011 | | 1979 | 9,800,003 | | 1978 | 9,958,792 | | 1977 | 10,151,566 | | 1976 | 10,393,615 | | 1975 | 10,640,989 | | 1974 | 10,864,190 | | 1973 | 11,081,318 | | 1972 | 11,284,545 | | 1971 | 11,471,232 | | 1970 | 11,693,807 | | 1969 | 11,924,087 | | 1968 | 12,088,133 | | 1967 | 12,169,152 | | 1966 | 12,171,895 | | 1965 | 12,102,347 | | 1964 | 11,959,273 | | 1963 | 11,774,945 | | 1962 | 11,593,911 | | 1961 | 11,421,639 | | 1960 | 11,268,622 |
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