| Year | Value | | 2022 | 419,498 | | 2021 | 400,345 | | 2020 | 378,873 | | 2019 | 354,484 | | 2018 | 328,579 | | 2017 | 303,069 | | 2016 | 278,335 | | 2015 | 254,745 | | 2014 | 233,137 | | 2013 | 213,660 | | 2012 | 195,606 | | 2011 | 179,558 | | 2010 | 165,877 | | 2009 | 154,046 | | 2008 | 144,235 | | 2007 | 136,561 | | 2006 | 130,617 | | 2005 | 126,374 | | 2004 | 123,753 | | 2003 | 122,391 | | 2002 | 121,992 | | 2001 | 122,586 | | 2000 | 124,071 | | 1999 | 126,305 | | 1998 | 129,750 | | 1997 | 133,879 | | 1996 | 137,373 | | 1995 | 139,788 | | 1994 | 140,468 | | 1993 | 140,042 | | 1992 | 138,642 | | 1991 | 135,581 | | 1990 | 131,619 | | 1989 | 127,184 | | 1988 | 122,329 | | 1987 | 116,695 | | 1986 | 110,112 | | 1985 | 103,812 | | 1984 | 98,482 | | 1983 | 95,436 | | 1982 | 93,777 | | 1981 | 91,470 | | 1980 | 89,036 | | 1979 | 86,601 | | 1978 | 84,217 | | 1977 | 81,832 | | 1976 | 79,397 | | 1975 | 76,913 | | 1974 | 74,425 | | 1973 | 71,944 | | 1972 | 69,541 | | 1971 | 67,301 | | 1970 | 65,257 | | 1969 | 63,359 | | 1968 | 61,495 | | 1967 | 59,748 | | 1966 | 58,277 | | 1965 | 57,073 | | 1964 | 56,078 | | 1963 | 55,445 | | 1962 | 55,090 | | 1961 | 54,671 | | 1960 | 54,062 |
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