| Year | Value | | 2022 | 6,356,601 | | 2021 | 6,113,761 | | 2020 | 5,892,952 | | 2019 | 5,682,852 | | 2018 | 5,489,716 | | 2017 | 5,297,313 | | 2016 | 5,100,803 | | 2015 | 4,916,706 | | 2014 | 4,748,019 | | 2013 | 4,595,113 | | 2012 | 4,458,927 | | 2011 | 4,335,113 | | 2010 | 4,218,526 | | 2009 | 4,108,105 | | 2008 | 4,002,984 | | 2007 | 3,899,892 | | 2006 | 3,798,433 | | 2005 | 3,700,726 | | 2004 | 3,607,384 | | 2003 | 3,515,987 | | 2002 | 3,423,486 | | 2001 | 3,332,075 | | 2000 | 3,245,367 | | 1999 | 3,158,425 | | 1998 | 3,070,872 | | 1997 | 2,987,302 | | 1996 | 2,909,821 | | 1995 | 2,837,488 | | 1994 | 2,771,530 | | 1993 | 2,708,989 | | 1992 | 2,644,470 | | 1991 | 2,584,722 | | 1990 | 2,529,609 | | 1989 | 2,473,117 | | 1988 | 2,417,727 | | 1987 | 2,361,387 | | 1986 | 2,301,984 | | 1985 | 2,243,306 | | 1984 | 2,184,337 | | 1983 | 2,126,328 | | 1982 | 2,068,510 | | 1981 | 2,012,884 | | 1980 | 1,962,886 | | 1979 | 1,912,863 | | 1978 | 1,860,787 | | 1977 | 1,811,116 | | 1976 | 1,763,689 | | 1975 | 1,718,472 | | 1974 | 1,672,620 | | 1973 | 1,623,113 | | 1972 | 1,574,037 | | 1971 | 1,537,218 | | 1970 | 1,504,737 | | 1969 | 1,464,852 | | 1968 | 1,424,561 | | 1967 | 1,385,140 | | 1966 | 1,346,640 | | 1965 | 1,308,650 | | 1964 | 1,271,081 | | 1963 | 1,235,066 | | 1962 | 1,201,334 | | 1961 | 1,170,475 | | 1960 | 1,143,748 |
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