Year | Value | 2022 | 45,578 | 2021 | 45,468 | 2020 | 45,520 | 2019 | 45,724 | 2018 | 46,088 | 2017 | 46,432 | 2016 | 46,758 | 2015 | 47,062 | 2014 | 47,331 | 2013 | 47,547 | 2012 | 47,703 | 2011 | 47,808 | 2010 | 49,192 | 2009 | 51,848 | 2008 | 54,506 | 2007 | 57,196 | 2006 | 59,875 | 2005 | 62,508 | 2004 | 65,052 | 2003 | 67,458 | 2002 | 69,690 | 2001 | 71,718 | 2000 | 72,426 | 1999 | 68,642 | 1998 | 61,591 | 1997 | 54,604 | 1996 | 47,846 | 1995 | 43,629 | 1994 | 42,807 | 1993 | 42,974 | 1992 | 43,153 | 1991 | 43,325 | 1990 | 43,073 | 1989 | 41,060 | 1988 | 37,828 | 1987 | 34,630 | 1986 | 31,445 | 1985 | 28,318 | 1984 | 25,309 | 1983 | 22,462 | 1982 | 19,803 | 1981 | 17,338 | 1980 | 15,285 | 1979 | 14,160 | 1978 | 13,708 | 1977 | 13,257 | 1976 | 12,789 | 1975 | 12,300 | 1974 | 11,777 | 1973 | 10,892 | 1972 | 9,550 | 1971 | 8,190 | 1970 | 7,106 | 1969 | 6,706 | 1968 | 6,743 | 1967 | 6,613 | 1966 | 6,371 | 1965 | 6,010 | 1964 | 5,664 | 1963 | 5,332 | 1962 | 5,020 | 1961 | 4,728 | 1960 | 4,457 |
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