| Year | Value | | 2022 | 10,181,778 | | 2021 | 10,001,701 | | 2020 | 9,741,164 | | 2019 | 9,470,255 | | 2018 | 9,206,904 | | 2017 | 8,961,347 | | 2016 | 8,728,618 | | 2015 | 8,499,488 | | 2014 | 8,263,446 | | 2013 | 8,009,710 | | 2012 | 7,753,181 | | 2011 | 7,509,912 | | 2010 | 7,252,631 | | 2009 | 6,990,831 | | 2008 | 6,762,228 | | 2007 | 6,567,668 | | 2006 | 6,418,554 | | 2005 | 6,340,350 | | 2004 | 6,314,010 | | 2003 | 6,320,007 | | 2002 | 6,343,958 | | 2001 | 6,313,681 | | 2000 | 6,218,056 | | 1999 | 6,064,388 | | 1998 | 5,850,081 | | 1997 | 5,624,055 | | 1996 | 5,450,991 | | 1995 | 5,359,607 | | 1994 | 5,323,933 | | 1993 | 5,330,881 | | 1992 | 5,329,593 | | 1991 | 5,278,692 | | 1990 | 5,185,490 | | 1989 | 5,044,260 | | 1988 | 4,878,136 | | 1987 | 4,685,704 | | 1986 | 4,500,182 | | 1985 | 4,332,208 | | 1984 | 4,176,959 | | 1983 | 4,045,104 | | 1982 | 3,922,622 | | 1981 | 3,804,817 | | 1980 | 3,734,361 | | 1979 | 3,698,137 | | 1978 | 3,646,825 | | 1977 | 3,621,639 | | 1976 | 3,623,284 | | 1975 | 3,606,446 | | 1974 | 3,557,771 | | 1973 | 3,484,832 | | 1972 | 3,407,789 | | 1971 | 3,330,805 | | 1970 | 3,260,895 | | 1969 | 3,186,350 | | 1968 | 3,109,546 | | 1967 | 3,030,287 | | 1966 | 2,933,593 | | 1965 | 2,846,799 | | 1964 | 2,765,884 | | 1963 | 2,675,903 | | 1962 | 2,591,160 | | 1961 | 2,529,997 | | 1960 | 2,473,833 |
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