Year | Value | 2022 | 43,212 | 2021 | 42,672 | 2020 | 43,559 | 2019 | 44,833 | 2018 | 44,611 | 2017 | 43,788 | 2016 | 43,432 | 2015 | 43,402 | 2014 | 43,365 | 2013 | 43,532 | 2012 | 43,935 | 2011 | 44,237 | 2010 | 44,625 | 2009 | 44,769 | 2008 | 44,234 | 2007 | 43,824 | 2006 | 43,083 | 2005 | 42,322 | 2004 | 41,632 | 2003 | 41,117 | 2002 | 40,514 | 2001 | 39,497 | 2000 | 37,895 | 1999 | 35,695 | 1998 | 32,548 | 1997 | 28,517 | 1996 | 24,527 | 1995 | 21,575 | 1994 | 20,694 | 1993 | 22,218 | 1992 | 25,286 | 1991 | 28,549 | 1990 | 31,075 | 1989 | 32,126 | 1988 | 31,987 | 1987 | 31,495 | 1986 | 30,765 | 1985 | 30,016 | 1984 | 29,283 | 1983 | 28,603 | 1982 | 28,073 | 1981 | 27,831 | 1980 | 27,821 | 1979 | 27,566 | 1978 | 26,991 | 1977 | 26,206 | 1976 | 25,056 | 1975 | 23,514 | 1974 | 22,157 | 1973 | 21,128 | 1972 | 20,112 | 1971 | 19,110 | 1970 | 18,111 | 1969 | 17,347 | 1968 | 16,975 | 1967 | 16,714 | 1966 | 16,468 | 1965 | 16,333 | 1964 | 16,142 | 1963 | 15,782 | 1962 | 15,313 | 1961 | 14,782 | 1960 | 14,303 |
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