| Year | Value | | 2022 | 80,619 | | 2021 | 83,879 | | 2020 | 83,440 | | 2019 | 82,702 | | 2018 | 82,852 | | 2017 | 83,753 | | 2016 | 85,507 | | 2015 | 87,709 | | 2014 | 90,427 | | 2013 | 93,257 | | 2012 | 96,775 | | 2011 | 101,371 | | 2010 | 107,293 | | 2009 | 113,485 | | 2008 | 118,235 | | 2007 | 120,795 | | 2006 | 121,126 | | 2005 | 119,619 | | 2004 | 116,821 | | 2003 | 114,204 | | 2002 | 112,840 | | 2001 | 112,820 | | 2000 | 114,552 | | 1999 | 116,110 | | 1998 | 115,629 | | 1997 | 111,809 | | 1996 | 103,823 | | 1995 | 91,635 | | 1994 | 78,916 | | 1993 | 69,311 | | 1992 | 65,489 | | 1991 | 67,857 | | 1990 | 73,792 | | 1989 | 80,602 | | 1988 | 86,784 | | 1987 | 91,412 | | 1986 | 93,922 | | 1985 | 94,843 | | 1984 | 94,566 | | 1983 | 92,924 | | 1982 | 90,353 | | 1981 | 87,918 | | 1980 | 86,468 | | 1979 | 86,296 | | 1978 | 87,127 | | 1977 | 88,166 | | 1976 | 88,795 | | 1975 | 88,648 | | 1974 | 87,739 | | 1973 | 86,403 | | 1972 | 84,858 | | 1971 | 82,987 | | 1970 | 80,584 | | 1969 | 77,259 | | 1968 | 72,539 | | 1967 | 66,782 | | 1966 | 61,093 | | 1965 | 56,546 | | 1964 | 53,837 | | 1963 | 53,290 | | 1962 | 54,569 | | 1961 | 56,337 | | 1960 | 57,461 |
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