Year | Value | 2022 | 46,097 | 2021 | 47,001 | 2020 | 47,873 | 2019 | 48,874 | 2018 | 49,549 | 2017 | 50,062 | 2016 | 50,805 | 2015 | 51,384 | 2014 | 51,751 | 2013 | 51,989 | 2012 | 52,122 | 2011 | 52,047 | 2010 | 51,784 | 2009 | 51,444 | 2008 | 51,039 | 2007 | 50,570 | 2006 | 50,193 | 2005 | 49,996 | 2004 | 49,912 | 2003 | 49,804 | 2002 | 49,693 | 2001 | 49,725 | 2000 | 49,994 | 1999 | 50,650 | 1998 | 51,793 | 1997 | 53,417 | 1996 | 55,365 | 1995 | 57,514 | 1994 | 59,930 | 1993 | 62,721 | 1992 | 65,871 | 1991 | 69,318 | 1990 | 72,888 | 1989 | 76,036 | 1988 | 78,558 | 1987 | 80,474 | 1986 | 81,577 | 1985 | 81,747 | 1984 | 81,361 | 1983 | 80,415 | 1982 | 78,619 | 1981 | 76,330 | 1980 | 73,982 | 1979 | 71,866 | 1978 | 70,239 | 1977 | 69,198 | 1976 | 68,316 | 1975 | 67,229 | 1974 | 65,977 | 1973 | 64,724 | 1972 | 63,699 | 1971 | 63,379 | 1970 | 64,369 | 1969 | 66,631 | 1968 | 69,394 | 1967 | 71,920 | 1966 | 73,815 | 1965 | 74,746 | 1964 | 74,710 | 1963 | 74,022 | 1962 | 72,999 | 1961 | 71,800 | 1960 | 70,785 |
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