| Year | Value | | 2022 | 10,142,619 | | 2021 | 9,949,437 | | 2020 | 9,749,640 | | 2019 | 9,542,486 | | 2018 | 9,329,227 | | 2017 | 9,114,796 | | 2016 | 8,899,169 | | 2015 | 8,682,174 | | 2014 | 8,464,153 | | 2013 | 8,245,627 | | 2012 | 8,026,545 | | 2011 | 7,806,637 | | 2010 | 7,583,269 | | 2009 | 7,358,890 | | 2008 | 7,137,988 | | 2007 | 6,921,066 | | 2006 | 6,708,217 | | 2005 | 6,498,818 | | 2004 | 6,293,166 | | 2003 | 6,090,980 | | 2002 | 5,892,596 | | 2001 | 5,698,489 | | 2000 | 5,508,297 | | 1999 | 5,321,388 | | 1998 | 5,138,829 | | 1997 | 4,960,439 | | 1996 | 4,785,895 | | 1995 | 4,616,439 | | 1994 | 4,451,694 | | 1993 | 4,291,588 | | 1992 | 4,136,644 | | 1991 | 3,990,995 | | 1990 | 3,864,972 | | 1989 | 3,764,112 | | 1988 | 3,679,651 | | 1987 | 3,600,343 | | 1986 | 3,522,916 | | 1985 | 3,447,579 | | 1984 | 3,374,465 | | 1983 | 3,303,677 | | 1982 | 3,235,264 | | 1981 | 3,169,073 | | 1980 | 3,104,788 | | 1979 | 3,041,902 | | 1978 | 2,979,606 | | 1977 | 2,917,572 | | 1976 | 2,855,837 | | 1975 | 2,794,462 | | 1974 | 2,733,313 | | 1973 | 2,672,144 | | 1972 | 2,610,700 | | 1971 | 2,549,315 | | 1970 | 2,489,059 | | 1969 | 2,430,922 | | 1968 | 2,375,356 | | 1967 | 2,322,647 | | 1966 | 2,271,490 | | 1965 | 2,222,178 | | 1964 | 2,175,409 | | 1963 | 2,129,222 | | 1962 | 2,082,562 | | 1961 | 2,035,672 | | 1960 | 1,985,666 |
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