| Year | Value | | 2022 | 6,259,429 | | 2021 | 6,366,654 | | 2020 | 6,376,390 | | 2019 | 6,167,838 | | 2018 | 5,878,068 | | 2017 | 5,581,387 | | 2016 | 5,291,524 | | 2015 | 5,022,141 | | 2014 | 4,777,012 | | 2013 | 4,556,643 | | 2012 | 4,361,476 | | 2011 | 4,187,687 | | 2010 | 4,030,270 | | 2009 | 3,884,790 | | 2008 | 3,746,929 | | 2007 | 3,613,633 | | 2006 | 3,483,397 | | 2005 | 3,354,263 | | 2004 | 3,224,020 | | 2003 | 3,092,103 | | 2002 | 2,959,008 | | 2001 | 2,825,482 | | 2000 | 2,693,647 | | 1999 | 2,566,668 | | 1998 | 2,446,906 | | 1997 | 2,336,352 | | 1996 | 2,237,468 | | 1995 | 2,151,854 | | 1994 | 2,080,009 | | 1993 | 2,022,276 | | 1992 | 1,976,866 | | 1991 | 1,939,227 | | 1990 | 1,905,159 | | 1989 | 1,871,629 | | 1988 | 1,835,114 | | 1987 | 1,794,773 | | 1986 | 1,754,122 | | 1985 | 1,716,072 | | 1984 | 1,680,815 | | 1983 | 1,649,215 | | 1982 | 1,619,067 | | 1981 | 1,583,117 | | 1980 | 1,535,691 | | 1979 | 1,475,129 | | 1978 | 1,399,746 | | 1977 | 1,313,005 | | 1976 | 1,225,434 | | 1975 | 1,145,768 | | 1974 | 1,077,581 | | 1973 | 1,024,742 | | 1972 | 986,260 | | 1971 | 953,349 | | 1970 | 918,068 | | 1969 | 877,557 | | 1968 | 829,309 | | 1967 | 776,325 | | 1966 | 729,066 | | 1965 | 693,800 | | 1964 | 669,786 | | 1963 | 659,195 | | 1962 | 662,465 | | 1961 | 670,190 | | 1960 | 672,935 |
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