| Year | Value | | 2022 | 90,525 | | 2021 | 94,802 | | 2020 | 100,410 | | 2019 | 106,066 | | 2018 | 110,637 | | 2017 | 113,800 | | 2016 | 115,273 | | 2015 | 115,445 | | 2014 | 115,331 | | 2013 | 115,357 | | 2012 | 115,498 | | 2011 | 115,913 | | 2010 | 116,642 | | 2009 | 117,512 | | 2008 | 118,420 | | 2007 | 119,572 | | 2006 | 120,749 | | 2005 | 121,783 | | 2004 | 123,041 | | 2003 | 124,627 | | 2002 | 126,430 | | 2001 | 128,535 | | 2000 | 130,802 | | 1999 | 132,688 | | 1998 | 133,835 | | 1997 | 134,268 | | 1996 | 134,227 | | 1995 | 133,720 | | 1994 | 133,264 | | 1993 | 133,214 | | 1992 | 132,580 | | 1991 | 131,466 | | 1990 | 130,612 | | 1989 | 129,393 | | 1988 | 127,850 | | 1987 | 127,159 | | 1986 | 127,104 | | 1985 | 127,084 | | 1984 | 127,796 | | 1983 | 129,587 | | 1982 | 131,987 | | 1981 | 134,892 | | 1980 | 138,100 | | 1979 | 140,384 | | 1978 | 140,776 | | 1977 | 139,668 | | 1976 | 137,268 | | 1975 | 133,784 | | 1974 | 130,680 | | 1973 | 128,863 | | 1972 | 127,981 | | 1971 | 127,873 | | 1970 | 128,671 | | 1969 | 129,699 | | 1968 | 130,518 | | 1967 | 131,126 | | 1966 | 131,242 | | 1965 | 130,846 | | 1964 | 130,020 | | 1963 | 128,810 | | 1962 | 127,359 | | 1961 | 125,802 | | 1960 | 124,053 |
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