Year | Value | 2022 | 56,766 | 2021 | 46,958 | 2020 | 46,598 | 2019 | 46,256 | 2018 | 45,934 | 2017 | 45,576 | 2016 | 45,099 | 2015 | 44,575 | 2014 | 43,671 | 2013 | 43,102 | 2012 | 42,453 | 2011 | 42,194 | 2010 | 43,487 | 2009 | 42,438 | 2008 | 42,403 | 2007 | 41,587 | 2006 | 41,489 | 2005 | 40,744 | 2004 | 40,663 | 2003 | 40,933 | 2002 | 41,486 | 2001 | 40,294 | 2000 | 40,339 | 1999 | 40,062 | 1998 | 39,342 | 1997 | 38,728 | 1996 | 38,347 | 1995 | 37,677 | 1994 | 37,034 | 1993 | 36,035 | 1992 | 35,309 | 1991 | 35,174 | 1990 | 34,750 | 1989 | 34,620 | 1988 | 34,470 | 1987 | 34,354 | 1986 | 32,885 | 1985 | 32,641 | 1984 | 32,338 | 1983 | 32,108 | 1982 | 32,111 | 1981 | 31,885 | 1980 | 31,465 | 1979 | 31,153 | 1978 | 30,865 | 1977 | 30,630 | 1976 | 29,945 | 1975 | 29,334 | 1974 | 28,658 | 1973 | 28,137 | 1972 | 27,732 | 1971 | 27,118 | 1970 | 26,607 | 1969 | 26,025 | 1968 | 25,446 | 1967 | 24,872 | 1966 | 24,304 | 1965 | 23,742 | 1964 | 23,186 | 1963 | 22,647 | 1962 | 22,118 | 1961 | 21,577 | 1960 | 21,022 |
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