| Year | Value | | 2022 | 404,752 | | 2021 | 376,831 | | 2020 | 351,505 | | 2019 | 329,148 | | 2018 | 310,542 | | 2017 | 297,060 | | 2016 | 287,748 | | 2015 | 281,455 | | 2014 | 277,186 | | 2013 | 274,111 | | 2012 | 271,388 | | 2011 | 268,429 | | 2010 | 265,063 | | 2009 | 261,071 | | 2008 | 256,528 | | 2007 | 251,484 | | 2006 | 245,639 | | 2005 | 238,975 | | 2004 | 231,322 | | 2003 | 222,610 | | 2002 | 212,838 | | 2001 | 202,229 | | 2000 | 191,411 | | 1999 | 181,000 | | 1998 | 171,485 | | 1997 | 160,427 | | 1996 | 148,322 | | 1995 | 140,300 | | 1994 | 135,612 | | 1993 | 131,318 | | 1992 | 127,230 | | 1991 | 123,372 | | 1990 | 119,857 | | 1989 | 116,673 | | 1988 | 113,681 | | 1987 | 110,827 | | 1986 | 107,919 | | 1985 | 105,001 | | 1984 | 102,315 | | 1983 | 99,751 | | 1982 | 97,212 | | 1981 | 94,723 | | 1980 | 92,305 | | 1979 | 89,972 | | 1978 | 87,731 | | 1977 | 85,492 | | 1976 | 80,851 | | 1975 | 74,733 | | 1974 | 71,434 | | 1973 | 70,408 | | 1972 | 70,027 | | 1971 | 70,332 | | 1970 | 71,611 | | 1969 | 73,665 | | 1968 | 75,666 | | 1967 | 77,349 | | 1966 | 79,139 | | 1965 | 77,789 | | 1964 | 72,622 | | 1963 | 67,330 | | 1962 | 62,907 | | 1961 | 59,061 | | 1960 | 56,991 |
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