| Year | Value | | 2022 | 7,339,669 | | 2021 | 7,078,661 | | 2020 | 6,841,707 | | 2019 | 6,609,034 | | 2018 | 6,385,420 | | 2017 | 6,172,480 | | 2016 | 5,956,090 | | 2015 | 5,726,980 | | 2014 | 5,481,124 | | 2013 | 5,216,690 | | 2012 | 4,958,501 | | 2011 | 4,723,154 | | 2010 | 4,497,391 | | 2009 | 4,272,136 | | 2008 | 4,056,195 | | 2007 | 3,860,383 | | 2006 | 3,686,590 | | 2005 | 3,544,056 | | 2004 | 3,436,708 | | 2003 | 3,361,219 | | 2002 | 3,309,762 | | 2001 | 3,268,594 | | 2000 | 3,229,180 | | 1999 | 3,190,730 | | 1998 | 3,150,482 | | 1997 | 3,096,779 | | 1996 | 3,029,075 | | 1995 | 2,963,152 | | 1994 | 2,899,497 | | 1993 | 2,829,961 | | 1992 | 2,755,005 | | 1991 | 2,677,314 | | 1990 | 2,604,494 | | 1989 | 2,526,364 | | 1988 | 2,462,836 | | 1987 | 2,401,468 | | 1986 | 2,334,736 | | 1985 | 2,261,528 | | 1984 | 2,183,025 | | 1983 | 2,098,496 | | 1982 | 2,011,517 | | 1981 | 1,928,792 | | 1980 | 1,856,205 | | 1979 | 1,795,508 | | 1978 | 1,749,388 | | 1977 | 1,713,899 | | 1976 | 1,670,792 | | 1975 | 1,625,058 | | 1974 | 1,593,936 | | 1973 | 1,574,342 | | 1972 | 1,557,304 | | 1971 | 1,539,735 | | 1970 | 1,517,916 | | 1969 | 1,492,871 | | 1968 | 1,465,428 | | 1967 | 1,435,969 | | 1966 | 1,404,563 | | 1965 | 1,373,723 | | 1964 | 1,342,723 | | 1963 | 1,314,060 | | 1962 | 1,289,784 | | 1961 | 1,266,078 | | 1960 | 1,238,690 |
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