| Year | Value | | 2022 | 664,528 | | 2021 | 645,751 | | 2020 | 625,826 | | 2019 | 604,670 | | 2018 | 583,251 | | 2017 | 561,399 | | 2016 | 539,327 | | 2015 | 517,453 | | 2014 | 495,660 | | 2013 | 473,626 | | 2012 | 451,475 | | 2011 | 429,651 | | 2010 | 408,541 | | 2009 | 386,038 | | 2008 | 362,299 | | 2007 | 340,081 | | 2006 | 320,246 | | 2005 | 303,727 | | 2004 | 291,037 | | 2003 | 282,451 | | 2002 | 276,786 | | 2001 | 271,483 | | 2000 | 264,327 | | 1999 | 254,261 | | 1998 | 240,205 | | 1997 | 223,493 | | 1996 | 208,459 | | 1995 | 197,636 | | 1994 | 190,142 | | 1993 | 185,470 | | 1992 | 183,164 | | 1991 | 180,533 | | 1990 | 176,008 | | 1989 | 170,163 | | 1988 | 163,270 | | 1987 | 155,588 | | 1986 | 148,694 | | 1985 | 143,588 | | 1984 | 140,054 | | 1983 | 137,891 | | 1982 | 136,686 | | 1981 | 135,289 | | 1980 | 133,010 | | 1979 | 129,958 | | 1978 | 126,220 | | 1977 | 122,102 | | 1976 | 118,596 | | 1975 | 116,209 | | 1974 | 114,815 | | 1973 | 114,445 | | 1972 | 114,600 | | 1971 | 113,821 | | 1970 | 111,337 | | 1969 | 107,374 | | 1968 | 101,901 | | 1967 | 95,334 | | 1966 | 89,212 | | 1965 | 84,391 | | 1964 | 80,707 | | 1963 | 78,241 | | 1962 | 76,722 | | 1961 | 74,995 | | 1960 | 72,497 |
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