Year | Value | 2022 | 45,288 | 2021 | 43,678 | 2020 | 42,363 | 2019 | 41,421 | 2018 | 40,881 | 2017 | 40,649 | 2016 | 40,559 | 2015 | 40,624 | 2014 | 40,776 | 2013 | 40,878 | 2012 | 40,940 | 2011 | 40,976 | 2010 | 40,950 | 2009 | 40,930 | 2008 | 40,913 | 2007 | 40,388 | 2006 | 39,795 | 2005 | 39,484 | 2004 | 38,981 | 2003 | 38,257 | 2002 | 37,314 | 2001 | 36,210 | 2000 | 34,975 | 1999 | 34,447 | 1998 | 34,478 | 1997 | 34,096 | 1996 | 33,648 | 1995 | 33,366 | 1994 | 32,307 | 1993 | 30,799 | 1992 | 29,969 | 1991 | 29,644 | 1990 | 29,623 | 1989 | 29,808 | 1988 | 30,063 | 1987 | 30,260 | 1986 | 30,152 | 1985 | 29,841 | 1984 | 29,592 | 1983 | 29,338 | 1982 | 29,052 | 1981 | 28,725 | 1980 | 28,335 | 1979 | 27,860 | 1978 | 27,313 | 1977 | 26,745 | 1976 | 26,074 | 1975 | 25,297 | 1974 | 24,557 | 1973 | 23,894 | 1972 | 23,329 | 1971 | 22,880 | 1970 | 22,543 | 1969 | 22,279 | 1968 | 22,045 | 1967 | 21,797 | 1966 | 21,188 | 1965 | 20,325 | 1964 | 19,578 | 1963 | 18,856 | 1962 | 18,136 | 1961 | 17,430 | 1960 | 16,756 |
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