Year | Value | 2021 | 10,230 | 2020 | 10,290 | 2019 | 10,365 | 2018 | 10,218 | 2017 | 10,070 | 2016 | 10,659.6 | 2015 | 10,563 | 2014 | 10,640 | 2013 | 10,566 | 2012 | 10,449 | 2011 | 10,026 | 2010 | 10,023 | 2009 | 10,250 | 2008 | 9,725 | 2007 | 9,633 | 2006 | 10,180 | 2005 | 10,130 | 2004 | 10,370 | 2003 | 10,050 | 2002 | 10,250 | 2001 | 10,220 | 2000 | 10,690 | 1999 | 10,670 | 1998 | 10,660 | 1997 | 10,610 | 1996 | 10,510 | 1995 | 11,140 | 1994 | 10,720 | 1993 | 10,900 | 1992 | 11,207 | 1991 | 10,104 | 1990 | 10,402 | 1989 | 11,498 | 1988 | 11,650 | 1987 | 11,560 | 1986 | 11,258 | 1985 | 11,178 | 1984 | 10,501 | 1983 | 11,380 | 1982 | 11,241 | 1981 | 11,176 | 1980 | 11,270 | 1979 | 11,250 | 1978 | 11,220 | 1977 | 11,180 | 1976 | 11,170 | 1975 | 11,150 | 1974 | 11,140 | 1973 | 11,100 | 1972 | 11,090 | 1971 | 11,050 | 1970 | 11,040 | 1969 | 11,000 | 1968 | 10,990 | 1967 | 10,970 | 1966 | 10,940 | 1965 | 10,920 | 1964 | 10,910 | 1963 | 10,870 | 1962 | 10,860 | 1961 | 10,840 |
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