| Year | Value | | 2022 | 8,603,957 | | 2021 | 8,253,983 | | 2020 | 7,906,271 | | 2019 | 7,554,704 | | 2018 | 7,231,234 | | 2017 | 6,949,192 | | 2016 | 6,701,191 | | 2015 | 6,483,830 | | 2014 | 6,288,499 | | 2013 | 6,107,177 | | 2012 | 5,933,577 | | 2011 | 5,766,288 | | 2010 | 5,607,256 | | 2009 | 5,458,129 | | 2008 | 5,309,382 | | 2007 | 5,172,389 | | 2006 | 5,044,093 | | 2005 | 4,919,477 | | 2004 | 4,798,256 | | 2003 | 4,678,352 | | 2002 | 4,553,496 | | 2001 | 4,420,693 | | 2000 | 4,283,170 | | 1999 | 4,141,841 | | 1998 | 3,995,087 | | 1997 | 3,844,206 | | 1996 | 3,693,245 | | 1995 | 3,544,364 | | 1994 | 3,397,547 | | 1993 | 3,254,053 | | 1992 | 3,119,456 | | 1991 | 2,998,046 | | 1990 | 2,892,109 | | 1989 | 2,803,093 | | 1988 | 2,729,108 | | 1987 | 2,664,032 | | 1986 | 2,600,576 | | 1985 | 2,534,494 | | 1984 | 2,464,431 | | 1983 | 2,388,993 | | 1982 | 2,309,041 | | 1981 | 2,228,892 | | 1980 | 2,151,671 | | 1979 | 2,076,262 | | 1978 | 2,002,735 | | 1977 | 1,933,169 | | 1976 | 1,867,594 | | 1975 | 1,804,480 | | 1974 | 1,742,578 | | 1973 | 1,681,778 | | 1972 | 1,621,685 | | 1971 | 1,561,163 | | 1970 | 1,501,081 | | 1969 | 1,442,149 | | 1968 | 1,382,982 | | 1967 | 1,324,576 | | 1966 | 1,269,764 | | 1965 | 1,221,228 | | 1964 | 1,179,158 | | 1963 | 1,142,041 | | 1962 | 1,107,847 | | 1961 | 1,075,105 | | 1960 | 1,041,729 |
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