| Year | Value | | 2022 | 75,731 | | 2021 | 71,385 | | 2020 | 71,436 | | 2019 | 71,945 | | 2018 | 73,737 | | 2017 | 76,761 | | 2016 | 81,041 | | 2015 | 86,147 | | 2014 | 92,193 | | 2013 | 97,754 | | 2012 | 102,785 | | 2011 | 107,630 | | 2010 | 112,665 | | 2009 | 118,129 | | 2008 | 124,029 | | 2007 | 130,210 | | 2006 | 136,109 | | 2005 | 141,048 | | 2004 | 144,537 | | 2003 | 145,642 | | 2002 | 144,168 | | 2001 | 141,877 | | 2000 | 139,733 | | 1999 | 136,529 | | 1998 | 132,362 | | 1997 | 128,745 | | 1996 | 126,393 | | 1995 | 124,399 | | 1994 | 123,055 | | 1993 | 121,443 | | 1992 | 119,488 | | 1991 | 116,705 | | 1990 | 112,790 | | 1989 | 108,327 | | 1988 | 104,021 | | 1987 | 100,371 | | 1986 | 97,960 | | 1985 | 97,125 | | 1984 | 97,809 | | 1983 | 100,500 | | 1982 | 104,934 | | 1981 | 110,595 | | 1980 | 117,102 | | 1979 | 123,319 | | 1978 | 127,600 | | 1977 | 129,388 | | 1976 | 129,023 | | 1975 | 126,997 | | 1974 | 124,242 | | 1973 | 121,232 | | 1972 | 118,399 | | 1971 | 115,999 | | 1970 | 114,370 | | 1969 | 112,003 | | 1968 | 107,882 | | 1967 | 102,159 | | 1966 | 94,164 | | 1965 | 84,273 | | 1964 | 75,337 | | 1963 | 69,456 | | 1962 | 66,865 | | 1961 | 67,564 | | 1960 | 70,535 |
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