| Year | Value | | 2022 | 400,642 | | 2021 | 394,509 | | 2020 | 388,341 | | 2019 | 381,965 | | 2018 | 375,462 | | 2017 | 368,695 | | 2016 | 361,750 | | 2015 | 355,043 | | 2014 | 348,451 | | 2013 | 341,874 | | 2012 | 335,379 | | 2011 | 328,762 | | 2010 | 322,218 | | 2009 | 314,622 | | 2008 | 307,192 | | 2007 | 299,625 | | 2006 | 291,992 | | 2005 | 284,307 | | 2004 | 276,603 | | 2003 | 268,835 | | 2002 | 260,968 | | 2001 | 252,973 | | 2000 | 244,866 | | 1999 | 236,077 | | 1998 | 227,027 | | 1997 | 218,070 | | 1996 | 209,257 | | 1995 | 200,623 | | 1994 | 192,128 | | 1993 | 183,738 | | 1992 | 175,592 | | 1991 | 167,888 | | 1990 | 160,845 | | 1989 | 148,647 | | 1988 | 137,415 | | 1987 | 126,776 | | 1986 | 116,656 | | 1985 | 107,060 | | 1984 | 99,944 | | 1983 | 93,112 | | 1982 | 86,589 | | 1981 | 80,392 | | 1980 | 74,607 | | 1979 | 72,282 | | 1978 | 70,478 | | 1977 | 68,712 | | 1976 | 66,966 | | 1975 | 65,194 | | 1974 | 63,447 | | 1973 | 61,780 | | 1972 | 60,171 | | 1971 | 58,407 | | 1970 | 56,186 | | 1969 | 53,630 | | 1968 | 51,064 | | 1967 | 48,629 | | 1966 | 46,318 | | 1965 | 44,126 | | 1964 | 42,042 | | 1963 | 40,049 | | 1962 | 38,148 | | 1961 | 36,402 | | 1960 | 35,001 |
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