| Year | Value | | 2022 | 12,763,479 | | 2021 | 12,311,045 | | 2020 | 11,854,810 | | 2019 | 11,424,888 | | 2018 | 11,011,734 | | 2017 | 10,619,515 | | 2016 | 10,221,380 | | 2015 | 9,786,202 | | 2014 | 9,360,264 | | 2013 | 8,947,777 | | 2012 | 8,538,450 | | 2011 | 8,165,242 | | 2010 | 7,821,868 | | 2009 | 7,507,693 | | 2008 | 7,235,104 | | 2007 | 6,985,188 | | 2006 | 6,725,211 | | 2005 | 6,448,010 | | 2004 | 6,162,979 | | 2003 | 5,878,062 | | 2002 | 5,610,727 | | 2001 | 5,354,442 | | 2000 | 5,097,997 | | 1999 | 4,832,779 | | 1998 | 4,577,458 | | 1997 | 4,355,890 | | 1996 | 4,159,580 | | 1995 | 3,993,644 | | 1994 | 3,871,730 | | 1993 | 3,794,312 | | 1992 | 3,733,201 | | 1991 | 3,668,092 | | 1990 | 3,613,897 | | 1989 | 3,547,999 | | 1988 | 3,496,936 | | 1987 | 3,440,683 | | 1986 | 3,376,613 | | 1985 | 3,310,069 | | 1984 | 3,239,716 | | 1983 | 3,161,277 | | 1982 | 3,079,642 | | 1981 | 2,989,561 | | 1980 | 2,901,694 | | 1979 | 2,826,344 | | 1978 | 2,761,883 | | 1977 | 2,700,730 | | 1976 | 2,622,077 | | 1975 | 2,532,184 | | 1974 | 2,444,098 | | 1973 | 2,354,331 | | 1972 | 2,262,864 | | 1971 | 2,181,931 | | 1970 | 2,114,607 | | 1969 | 2,058,916 | | 1968 | 2,014,969 | | 1967 | 1,981,343 | | 1966 | 1,950,550 | | 1965 | 1,920,538 | | 1964 | 1,890,597 | | 1963 | 1,864,002 | | 1962 | 1,839,939 | | 1961 | 1,814,641 | | 1960 | 1,788,450 |
|