Year | Value | 2021 | 50,436.886 | 2020 | 49,166.726 | 2019 | 52,780 | 2018 | 52,960 | 2017 | 53,030 | 2016 | 52,820 | 2015 | 52,640 | 2014 | 52,640 | 2013 | 52,570 | 2012 | 53,380 | 2011 | 53,370 | 2010 | 53,430 | 2009 | 57,830 | 2008 | 57,900 | 2007 | 58,070 | 2006 | 58,090 | 2005 | 58,630 | 2004 | 58,640 | 2003 | 58,650 | 2002 | 58,490 | 2001 | 58,650 | 2000 | 58,540 | 1999 | 61,860 | 1998 | 61,930 | 1997 | 61,950 | 1996 | 61,840 | 1995 | 61,790 | 1994 | 61,220 | 1993 | 61,300 | 1992 | 61,360 | 1991 | 64,600 | 1990 | 64,740 | 1989 | 64,840 | 1988 | 64,970 | 1987 | 65,110 | 1986 | 65,230 | 1985 | 65,390 | 1984 | 65,540 | 1983 | 65,710 | 1982 | 65,820 | 1981 | 66,010 | 1980 | 66,270 | 1979 | 66,510 | 1978 | 66,980 | 1977 | 67,290 | 1976 | 67,570 | 1975 | 67,700 | 1974 | 67,820 | 1973 | 68,350 | 1972 | 68,460 | 1971 | 68,550 | 1970 | 68,750 | 1969 | 68,880 | 1968 | 69,030 | 1967 | 69,140 | 1966 | 69,270 | 1965 | 69,530 | 1964 | 69,790 | 1963 | 69,840 | 1962 | 70,120 | 1961 | 70,830 |
|