| Year | Value | | 2022 | 6,663,569 | | 2021 | 6,487,184 | | 2020 | 6,312,347 | | 2019 | 6,138,319 | | 2018 | 5,965,949 | | 2017 | 5,796,573 | | 2016 | 5,630,820 | | 2015 | 5,469,779 | | 2014 | 5,313,453 | | 2013 | 5,163,111 | | 2012 | 5,018,490 | | 2011 | 4,876,973 | | 2010 | 4,738,442 | | 2009 | 4,603,557 | | 2008 | 4,472,279 | | 2007 | 4,345,111 | | 2006 | 4,225,023 | | 2005 | 4,098,638 | | 2004 | 3,971,305 | | 2003 | 3,855,563 | | 2002 | 3,743,597 | | 2001 | 3,635,278 | | 2000 | 3,529,498 | | 1999 | 3,425,981 | | 1998 | 3,325,108 | | 1997 | 3,228,231 | | 1996 | 3,138,689 | | 1995 | 3,061,849 | | 1994 | 3,001,627 | | 1993 | 2,894,012 | | 1992 | 2,770,448 | | 1991 | 2,688,403 | | 1990 | 2,608,813 | | 1989 | 2,532,102 | | 1988 | 2,458,169 | | 1987 | 2,386,631 | | 1986 | 2,317,628 | | 1985 | 2,251,389 | | 1984 | 2,187,684 | | 1983 | 2,126,426 | | 1982 | 2,067,582 | | 1981 | 2,011,068 | | 1980 | 1,957,205 | | 1979 | 1,906,416 | | 1978 | 1,858,772 | | 1977 | 1,813,879 | | 1976 | 1,771,430 | | 1975 | 1,731,379 | | 1974 | 1,693,542 | | 1973 | 1,657,562 | | 1972 | 1,623,108 | | 1971 | 1,590,175 | | 1970 | 1,558,830 | | 1969 | 1,528,872 | | 1968 | 1,500,013 | | 1967 | 1,472,353 | | 1966 | 1,445,937 | | 1965 | 1,420,715 | | 1964 | 1,396,864 | | 1963 | 1,374,361 | | 1962 | 1,353,255 | | 1961 | 1,333,567 | | 1960 | 1,315,471 |
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