| Year | Value | | 2022 | 8,529,817 | | 2021 | 8,407,784 | | 2020 | 8,263,871 | | 2019 | 8,066,522 | | 2018 | 7,886,952 | | 2017 | 7,723,673 | | 2016 | 7,550,439 | | 2015 | 7,354,242 | | 2014 | 7,136,876 | | 2013 | 6,898,862 | | 2012 | 6,649,738 | | 2011 | 6,412,777 | | 2010 | 6,198,965 | | 2009 | 5,999,522 | | 2008 | 5,804,157 | | 2007 | 5,613,087 | | 2006 | 5,426,557 | | 2005 | 5,244,075 | | 2004 | 5,065,025 | | 2003 | 4,890,143 | | 2002 | 4,721,326 | | 2001 | 4,559,984 | | 2000 | 4,407,697 | | 1999 | 4,266,937 | | 1998 | 4,139,544 | | 1997 | 4,023,131 | | 1996 | 3,912,908 | | 1995 | 3,805,284 | | 1994 | 3,698,546 | | 1993 | 3,590,695 | | 1992 | 3,482,596 | | 1991 | 3,379,134 | | 1990 | 3,283,089 | | 1989 | 3,194,602 | | 1988 | 3,115,806 | | 1987 | 3,042,564 | | 1986 | 2,962,371 | | 1985 | 2,868,239 | | 1984 | 2,760,563 | | 1983 | 2,635,759 | | 1982 | 2,501,022 | | 1981 | 2,378,233 | | 1980 | 2,281,145 | | 1979 | 2,209,262 | | 1978 | 2,165,402 | | 1977 | 2,140,385 | | 1976 | 2,104,993 | | 1975 | 2,040,901 | | 1974 | 1,950,223 | | 1973 | 1,832,272 | | 1972 | 1,697,268 | | 1971 | 1,582,075 | | 1970 | 1,509,060 | | 1969 | 1,474,944 | | 1968 | 1,483,615 | | 1967 | 1,525,860 | | 1966 | 1,555,936 | | 1965 | 1,544,802 | | 1964 | 1,492,406 | | 1963 | 1,392,888 | | 1962 | 1,258,651 | | 1961 | 1,131,698 | | 1960 | 1,041,828 |
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