| Year | Value | | 2022 | 7,227,715 | | 2021 | 6,904,253 | | 2020 | 6,587,430 | | 2019 | 6,281,301 | | 2018 | 5,986,896 | | 2017 | 5,701,421 | | 2016 | 5,422,969 | | 2015 | 5,153,071 | | 2014 | 4,893,865 | | 2013 | 4,646,488 | | 2012 | 4,409,695 | | 2011 | 4,183,204 | | 2010 | 3,970,062 | | 2009 | 3,768,369 | | 2008 | 3,576,677 | | 2007 | 3,393,537 | | 2006 | 3,198,105 | | 2005 | 2,988,501 | | 2004 | 2,790,981 | | 2003 | 2,605,597 | | 2002 | 2,432,722 | | 2001 | 2,271,106 | | 2000 | 2,120,383 | | 1999 | 1,979,850 | | 1998 | 1,849,296 | | 1997 | 1,729,955 | | 1996 | 1,636,410 | | 1995 | 1,566,552 | | 1994 | 1,499,561 | | 1993 | 1,435,962 | | 1992 | 1,375,473 | | 1991 | 1,317,665 | | 1990 | 1,261,498 | | 1989 | 1,206,461 | | 1988 | 1,153,661 | | 1987 | 1,102,623 | | 1986 | 1,053,228 | | 1985 | 984,153 | | 1984 | 894,830 | | 1983 | 813,067 | | 1982 | 738,845 | | 1981 | 671,625 | | 1980 | 610,448 | | 1979 | 554,710 | | 1978 | 504,384 | | 1977 | 458,849 | | 1976 | 418,068 | | 1975 | 389,607 | | 1974 | 374,449 | | 1973 | 360,372 | | 1972 | 347,156 | | 1971 | 334,534 | | 1970 | 322,446 | | 1969 | 310,647 | | 1968 | 299,301 | | 1967 | 288,439 | | 1966 | 278,026 | | 1965 | 268,109 | | 1964 | 258,628 | | 1963 | 249,584 | | 1962 | 240,956 | | 1961 | 232,742 | | 1960 | 224,813 |
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