| Year | Value | | 2022 | 3,058,085 | | 2021 | 3,043,507 | | 2020 | 3,183,827 | | 2019 | 3,311,664 | | 2018 | 3,429,597 | | 2017 | 3,543,221 | | 2016 | 3,643,642 | | 2015 | 3,729,006 | | 2014 | 3,801,161 | | 2013 | 3,856,156 | | 2012 | 3,899,018 | | 2011 | 3,952,073 | | 2010 | 4,009,334 | | 2009 | 4,074,068 | | 2008 | 4,139,490 | | 2007 | 4,210,735 | | 2006 | 4,285,198 | | 2005 | 4,335,389 | | 2004 | 4,348,743 | | 2003 | 4,320,019 | | 2002 | 4,254,950 | | 2001 | 4,180,938 | | 2000 | 4,101,557 | | 1999 | 4,025,829 | | 1998 | 3,980,229 | | 1997 | 3,976,448 | | 1996 | 3,939,572 | | 1995 | 3,865,685 | | 1994 | 3,797,640 | | 1993 | 3,727,500 | | 1992 | 3,661,486 | | 1991 | 3,679,983 | | 1990 | 3,773,820 | | 1989 | 3,869,059 | | 1988 | 3,983,407 | | 1987 | 4,110,170 | | 1986 | 4,235,798 | | 1985 | 4,361,806 | | 1984 | 4,469,433 | | 1983 | 4,538,442 | | 1982 | 4,569,986 | | 1981 | 4,564,630 | | 1980 | 4,533,984 | | 1979 | 4,497,319 | | 1978 | 4,455,052 | | 1977 | 4,388,896 | | 1976 | 4,278,897 | | 1975 | 4,082,707 | | 1974 | 3,849,618 | | 1973 | 3,641,317 | | 1972 | 3,447,395 | | 1971 | 3,307,591 | | 1970 | 3,278,885 | | 1969 | 3,315,323 | | 1968 | 3,352,714 | | 1967 | 3,396,442 | | 1966 | 3,430,966 | | 1965 | 3,455,197 | | 1964 | 3,468,422 | | 1963 | 3,480,881 | | 1962 | 3,509,684 | | 1961 | 3,554,275 | | 1960 | 3,609,731 |
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