Year | Value | 2021 | 64,010 | 2020 | 64,010 | 2019 | 64,010 | 2018 | 63,000 | 2017 | 63,000 | 2016 | 62,267 | 2015 | 62,403 | 2014 | 62,788.8 | 2013 | 63,423 | 2012 | 64,056 | 2011 | 64,078 | 2010 | 64,612 | 2009 | 65,138 | 2008 | 65,670 | 2007 | 66,200 | 2006 | 66,300 | 2005 | 66,370 | 2004 | 65,280 | 2003 | 66,380 | 2002 | 66,540 | 2001 | 66,560 | 2000 | 65,540 | 1999 | 66,600 | 1998 | 66,740 | 1997 | 66,870 | 1996 | 66,150 | 1995 | 66,840 | 1994 | 66,860 | 1993 | 67,300 | 1992 | 67,750 | 1991 | 67,550 | 1990 | 67,410 | 1989 | 67,720 | 1988 | 67,880 | 1987 | 67,260 | 1986 | 64,510 | 1985 | 62,220 | 1984 | 61,420 | 1983 | 61,790 | 1982 | 60,830 | 1981 | 59,380 | 1980 | 59,370 | 1979 | 58,620 | 1978 | 59,480 | 1977 | 60,380 | 1976 | 59,970 | 1975 | 58,100 | 1974 | 56,310 | 1973 | 58,510 | 1972 | 55,810 | 1971 | 50,730 | 1970 | 50,220 | 1969 | 47,450 | 1968 | 47,270 | 1967 | 46,210 | 1966 | 45,100 | 1965 | 45,480 | 1964 | 47,550 | 1963 | 40,380 | 1962 | 38,050 | 1961 | 35,500 |
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