| Year | Value | | 2022 | 266,850 | | 2021 | 255,629 | | 2020 | 244,388 | | 2019 | 233,495 | | 2018 | 223,099 | | 2017 | 213,013 | | 2016 | 203,513 | | 2015 | 194,940 | | 2014 | 187,182 | | 2013 | 180,027 | | 2012 | 173,469 | | 2011 | 167,386 | | 2010 | 161,558 | | 2009 | 156,006 | | 2008 | 150,781 | | 2007 | 145,767 | | 2006 | 140,868 | | 2005 | 136,065 | | 2004 | 131,369 | | 2003 | 126,784 | | 2002 | 122,307 | | 2001 | 117,927 | | 2000 | 113,670 | | 1999 | 109,220 | | 1998 | 104,512 | | 1997 | 99,462 | | 1996 | 93,870 | | 1995 | 88,080 | | 1994 | 82,645 | | 1993 | 77,841 | | 1992 | 73,706 | | 1991 | 70,403 | | 1990 | 67,796 | | 1989 | 65,741 | | 1988 | 64,246 | | 1987 | 63,156 | | 1986 | 62,274 | | 1985 | 61,497 | | 1984 | 60,760 | | 1983 | 60,017 | | 1982 | 59,218 | | 1981 | 58,353 | | 1980 | 57,411 | | 1979 | 56,338 | | 1978 | 55,057 | | 1977 | 53,666 | | 1976 | 52,401 | | 1975 | 51,368 | | 1974 | 50,620 | | 1973 | 50,140 | | 1972 | 49,669 | | 1971 | 48,863 | | 1970 | 47,555 | | 1969 | 45,824 | | 1968 | 43,640 | | 1967 | 41,236 | | 1966 | 39,194 | | 1965 | 37,867 | | 1964 | 37,202 | | 1963 | 37,171 | | 1962 | 37,590 | | 1961 | 37,910 | | 1960 | 37,778 |
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