Year | Value | 2022 | 40,105 | 2021 | 40,372 | 2020 | 41,175 | 2019 | 41,728 | 2018 | 41,807 | 2017 | 41,524 | 2016 | 41,100 | 2015 | 40,990 | 2014 | 40,812 | 2013 | 40,371 | 2012 | 39,966 | 2011 | 39,697 | 2010 | 39,238 | 2009 | 38,930 | 2008 | 38,942 | 2007 | 38,780 | 2006 | 38,237 | 2005 | 36,931 | 2004 | 34,838 | 2003 | 32,723 | 2002 | 31,496 | 2001 | 31,875 | 2000 | 33,511 | 1999 | 35,364 | 1998 | 37,623 | 1997 | 39,784 | 1996 | 40,470 | 1995 | 40,671 | 1994 | 40,650 | 1993 | 39,935 | 1992 | 39,491 | 1991 | 39,619 | 1990 | 40,193 | 1989 | 41,082 | 1988 | 42,153 | 1987 | 42,850 | 1986 | 42,388 | 1985 | 40,665 | 1984 | 38,466 | 1983 | 36,191 | 1982 | 33,442 | 1981 | 30,950 | 1980 | 29,151 | 1979 | 27,469 | 1978 | 26,104 | 1977 | 24,528 | 1976 | 22,826 | 1975 | 22,311 | 1974 | 23,031 | 1973 | 23,982 | 1972 | 25,531 | 1971 | 27,614 | 1970 | 28,899 | 1969 | 29,266 | 1968 | 29,110 | 1967 | 28,891 | 1966 | 28,856 | 1965 | 28,617 | 1964 | 28,241 | 1963 | 28,160 | 1962 | 28,182 | 1961 | 27,685 | 1960 | 27,121 |
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