| Year | Value | | 2022 | 99,035 | | 2021 | 100,938 | | 2020 | 102,568 | | 2019 | 100,995 | | 2018 | 101,839 | | 2017 | 106,020 | | 2016 | 107,807 | | 2015 | 109,158 | | 2014 | 110,641 | | 2013 | 112,437 | | 2012 | 113,813 | | 2011 | 114,923 | | 2010 | 115,646 | | 2009 | 115,668 | | 2008 | 115,541 | | 2007 | 115,420 | | 2006 | 115,651 | | 2005 | 115,013 | | 2004 | 113,837 | | 2003 | 112,793 | | 2002 | 110,900 | | 2001 | 108,360 | | 2000 | 107,289 | | 1999 | 107,501 | | 1998 | 107,407 | | 1997 | 107,573 | | 1996 | 107,369 | | 1995 | 105,667 | | 1994 | 103,030 | | 1993 | 100,591 | | 1992 | 97,663 | | 1991 | 94,313 | | 1990 | 91,602 | | 1989 | 88,594 | | 1988 | 84,973 | | 1987 | 81,600 | | 1986 | 78,795 | | 1985 | 76,812 | | 1984 | 74,770 | | 1983 | 72,236 | | 1982 | 70,246 | | 1981 | 68,730 | | 1980 | 67,164 | | 1979 | 66,107 | | 1978 | 65,849 | | 1977 | 65,304 | | 1976 | 64,532 | | 1975 | 63,794 | | 1974 | 62,594 | | 1973 | 60,762 | | 1972 | 58,317 | | 1971 | 55,583 | | 1970 | 53,136 | | 1969 | 51,920 | | 1968 | 52,013 | | 1967 | 52,639 | | 1966 | 53,273 | | 1965 | 53,600 | | 1964 | 53,611 | | 1963 | 53,374 | | 1962 | 53,049 | | 1961 | 52,737 | | 1960 | 52,438 |
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