| Year | Value | | 2022 | 87,625 | | 2021 | 84,074 | | 2020 | 81,669 | | 2019 | 79,041 | | 2018 | 77,324 | | 2017 | 78,919 | | 2016 | 82,448 | | 2015 | 85,412 | | 2014 | 88,066 | | 2013 | 90,553 | | 2012 | 91,733 | | 2011 | 92,518 | | 2010 | 94,109 | | 2009 | 95,159 | | 2008 | 94,748 | | 2007 | 94,136 | | 2006 | 93,348 | | 2005 | 93,078 | | 2004 | 93,315 | | 2003 | 93,342 | | 2002 | 92,827 | | 2001 | 91,976 | | 2000 | 91,084 | | 1999 | 89,925 | | 1998 | 88,189 | | 1997 | 85,828 | | 1996 | 82,796 | | 1995 | 78,794 | | 1994 | 73,962 | | 1993 | 68,052 | | 1992 | 61,488 | | 1991 | 56,030 | | 1990 | 52,379 | | 1989 | 51,190 | | 1988 | 52,803 | | 1987 | 56,333 | | 1986 | 60,260 | | 1985 | 63,560 | | 1984 | 65,748 | | 1983 | 66,806 | | 1982 | 67,163 | | 1981 | 67,079 | | 1980 | 66,953 | | 1979 | 66,506 | | 1978 | 65,581 | | 1977 | 64,489 | | 1976 | 63,537 | | 1975 | 63,287 | | 1974 | 63,204 | | 1973 | 62,283 | | 1972 | 60,779 | | 1971 | 58,793 | | 1970 | 55,909 | | 1969 | 52,968 | | 1968 | 50,988 | | 1967 | 49,204 | | 1966 | 47,600 | | 1965 | 46,374 | | 1964 | 45,608 | | 1963 | 44,782 | | 1962 | 43,590 | | 1961 | 41,911 | | 1960 | 39,434 |
|