Year | Value | 2022 | 56,375 | 2021 | 56,117 | 2020 | 55,757 | 2019 | 55,331 | 2018 | 54,857 | 2017 | 54,335 | 2016 | 53,776 | 2015 | 53,162 | 2014 | 52,442 | 2013 | 51,609 | 2012 | 50,691 | 2011 | 49,719 | 2010 | 48,759 | 2009 | 47,852 | 2008 | 46,976 | 2007 | 46,234 | 2006 | 45,773 | 2005 | 45,568 | 2004 | 45,577 | 2003 | 45,777 | 2002 | 45,713 | 2001 | 45,078 | 2000 | 44,115 | 1999 | 43,053 | 1998 | 42,347 | 1997 | 42,013 | 1996 | 41,693 | 1995 | 41,369 | 1994 | 41,022 | 1993 | 40,586 | 1992 | 40,021 | 1991 | 39,359 | 1990 | 38,632 | 1989 | 37,860 | 1988 | 37,055 | 1987 | 36,235 | 1986 | 35,393 | 1985 | 34,501 | 1984 | 33,555 | 1983 | 32,560 | 1982 | 31,543 | 1981 | 30,544 | 1980 | 29,556 | 1979 | 28,530 | 1978 | 27,501 | 1977 | 26,518 | 1976 | 25,585 | 1975 | 24,723 | 1974 | 23,916 | 1973 | 23,151 | 1972 | 22,456 | 1971 | 21,830 | 1970 | 21,278 | 1969 | 20,782 | 1968 | 20,322 | 1967 | 19,904 | 1966 | 19,527 | 1965 | 19,165 | 1964 | 18,799 | 1963 | 18,424 | 1962 | 18,035 | 1961 | 17,635 | 1960 | 17,232 |
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