| Year | Value | | 2022 | 88,219 | | 2021 | 87,864 | | 2020 | 87,551 | | 2019 | 87,298 | | 2018 | 87,114 | | 2017 | 86,992 | | 2016 | 86,919 | | 2015 | 86,898 | | 2014 | 86,933 | | 2013 | 87,016 | | 2012 | 87,148 | | 2011 | 87,329 | | 2010 | 87,550 | | 2009 | 87,786 | | 2008 | 87,941 | | 2007 | 88,086 | | 2006 | 88,283 | | 2005 | 88,499 | | 2004 | 88,706 | | 2003 | 88,901 | | 2002 | 89,079 | | 2001 | 89,244 | | 2000 | 89,526 | | 1999 | 90,219 | | 1998 | 90,964 | | 1997 | 91,749 | | 1996 | 92,529 | | 1995 | 93,291 | | 1994 | 94,017 | | 1993 | 94,697 | | 1992 | 95,349 | | 1991 | 95,994 | | 1990 | 96,739 | | 1989 | 97,433 | | 1988 | 98,130 | | 1987 | 98,790 | | 1986 | 99,379 | | 1985 | 99,904 | | 1984 | 100,357 | | 1983 | 100,755 | | 1982 | 101,117 | | 1981 | 101,436 | | 1980 | 101,689 | | 1979 | 100,706 | | 1978 | 99,515 | | 1977 | 98,320 | | 1976 | 97,153 | | 1975 | 96,007 | | 1974 | 94,879 | | 1973 | 93,774 | | 1972 | 92,684 | | 1971 | 91,630 | | 1970 | 90,645 | | 1969 | 90,062 | | 1968 | 89,629 | | 1967 | 89,205 | | 1966 | 88,753 | | 1965 | 88,282 | | 1964 | 87,790 | | 1963 | 87,262 | | 1962 | 86,704 | | 1961 | 86,115 | | 1960 | 85,525 |
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