Year | Value | 2021 | 95,110 | 2020 | 94,300 | 2019 | 93,950 | 2018 | 93,580 | 2017 | 93,230 | 2016 | 92,880 | 2015 | 93,280 | 2014 | 89,720 | 2013 | 89,680 | 2012 | 89,650 | 2011 | 89,650 | 2010 | 92,780 | 2009 | 92,780 | 2008 | 92,750 | 2007 | 85,030 | 2006 | 84,900 | 2005 | 87,760 | 2004 | 86,870 | 2003 | 86,320 | 2002 | 87,500 | 2001 | 87,990 | 2000 | 90,270 | 1999 | 91,120 | 1998 | 83,900 | 1997 | 86,280 | 1996 | 89,070 | 1995 | 88,150 | 1994 | 89,150 | 1993 | 88,180 | 1992 | 87,800 | 1991 | 87,090 | 1990 | 88,690 | 1989 | 88,270 | 1988 | 88,300 | 1987 | 88,320 | 1986 | 88,340 | 1985 | 88,360 | 1984 | 88,370 | 1983 | 88,380 | 1982 | 88,390 | 1981 | 88,400 | 1980 | 88,410 | 1979 | 88,420 | 1978 | 88,430 | 1977 | 88,440 | 1976 | 90,450 | 1975 | 90,460 | 1974 | 90,460 | 1973 | 89,960 | 1972 | 89,460 | 1971 | 89,460 | 1970 | 88,640 | 1969 | 89,030 | 1968 | 91,170 | 1967 | 89,470 | 1966 | 88,470 | 1965 | 88,470 | 1964 | 87,470 | 1963 | 87,470 | 1962 | 86,470 | 1961 | 86,470 |
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