| Year | Value | | 2022 | 99,058 | | 2021 | 97,937 | | 2020 | 97,216 | | 2019 | 96,976 | | 2018 | 97,160 | | 2017 | 97,530 | | 2016 | 97,739 | | 2015 | 97,372 | | 2014 | 96,168 | | 2013 | 94,140 | | 2012 | 91,552 | | 2011 | 88,676 | | 2010 | 85,665 | | 2009 | 82,616 | | 2008 | 79,566 | | 2007 | 76,524 | | 2006 | 73,561 | | 2005 | 70,694 | | 2004 | 67,894 | | 2003 | 65,184 | | 2002 | 62,555 | | 2001 | 59,985 | | 2000 | 57,519 | | 1999 | 55,204 | | 1998 | 53,024 | | 1997 | 50,974 | | 1996 | 49,038 | | 1995 | 47,192 | | 1994 | 45,449 | | 1993 | 43,795 | | 1992 | 42,199 | | 1991 | 40,695 | | 1990 | 39,298 | | 1989 | 37,989 | | 1988 | 36,756 | | 1987 | 35,587 | | 1986 | 34,457 | | 1985 | 33,359 | | 1984 | 32,300 | | 1983 | 31,261 | | 1982 | 30,233 | | 1981 | 29,245 | | 1980 | 28,326 | | 1979 | 27,478 | | 1978 | 26,706 | | 1977 | 26,015 | | 1976 | 25,396 | | 1975 | 24,836 | | 1974 | 24,285 | | 1973 | 23,668 | | 1972 | 23,086 | | 1971 | 22,552 | | 1970 | 21,930 | | 1969 | 21,249 | | 1968 | 20,751 | | 1967 | 20,375 | | 1966 | 19,969 | | 1965 | 19,642 | | 1964 | 19,418 | | 1963 | 19,307 | | 1962 | 19,277 | | 1961 | 19,277 | | 1960 | 19,272 |
|