| Year | Value | | 2022 | 102,950 | | 2021 | 101,258 | | 2020 | 99,515 | | 2019 | 97,955 | | 2018 | 97,084 | | 2017 | 95,850 | | 2016 | 94,017 | | 2015 | 92,508 | | 2014 | 91,350 | | 2013 | 90,498 | | 2012 | 90,720 | | 2011 | 92,248 | | 2010 | 94,910 | | 2009 | 97,773 | | 2008 | 99,973 | | 2007 | 102,494 | | 2006 | 106,067 | | 2005 | 110,540 | | 2004 | 114,881 | | 2003 | 118,336 | | 2002 | 121,058 | | 2001 | 123,342 | | 2000 | 125,694 | | 1999 | 128,523 | | 1998 | 131,962 | | 1997 | 135,774 | | 1996 | 139,904 | | 1995 | 144,132 | | 1994 | 147,665 | | 1993 | 150,199 | | 1992 | 151,296 | | 1991 | 149,503 | | 1990 | 145,540 | | 1989 | 140,954 | | 1988 | 135,167 | | 1987 | 129,572 | | 1986 | 126,150 | | 1985 | 124,417 | | 1984 | 123,539 | | 1983 | 122,894 | | 1982 | 121,253 | | 1981 | 118,462 | | 1980 | 115,670 | | 1979 | 112,392 | | 1978 | 110,037 | | 1977 | 111,206 | | 1976 | 114,555 | | 1975 | 117,045 | | 1974 | 118,780 | | 1973 | 120,110 | | 1972 | 119,407 | | 1971 | 117,598 | | 1970 | 116,389 | | 1969 | 115,672 | | 1968 | 114,981 | | 1967 | 114,438 | | 1966 | 113,537 | | 1965 | 112,620 | | 1964 | 112,191 | | 1963 | 111,341 | | 1962 | 109,522 | | 1961 | 106,132 | | 1960 | 101,084 |
|