| Year | Value | | 2022 | 9,118 | | 2021 | 8,841 | | 2020 | 8,568 | | 2019 | 8,298 | | 2018 | 8,060 | | 2017 | 7,862 | | 2016 | 7,665 | | 2015 | 7,447 | | 2014 | 7,202 | | 2013 | 6,919 | | 2012 | 6,606 | | 2011 | 6,285 | | 2010 | 5,975 | | 2009 | 5,664 | | 2008 | 5,348 | | 2007 | 5,057 | | 2006 | 4,784 | | 2005 | 4,517 | | 2004 | 4,263 | | 2003 | 4,021 | | 2002 | 3,769 | | 2001 | 3,502 | | 2000 | 3,235 | | 1999 | 2,971 | | 1998 | 2,719 | | 1997 | 2,511 | | 1996 | 2,376 | | 1995 | 2,317 | | 1994 | 2,321 | | 1993 | 2,367 | | 1992 | 2,407 | | 1991 | 2,404 | | 1990 | 2,355 | | 1989 | 2,294 | | 1988 | 2,240 | | 1987 | 2,201 | | 1986 | 2,185 | | 1985 | 2,182 | | 1984 | 2,179 | | 1983 | 2,172 | | 1982 | 2,162 | | 1981 | 2,136 | | 1980 | 2,098 | | 1979 | 2,055 | | 1978 | 2,001 | | 1977 | 1,941 | | 1976 | 1,889 | | 1975 | 1,845 | | 1974 | 1,809 | | 1973 | 1,782 | | 1972 | 1,758 | | 1971 | 1,731 | | 1970 | 1,705 | | 1969 | 1,681 | | 1968 | 1,666 | | 1967 | 1,669 | | 1966 | 1,675 | | 1965 | 1,679 | | 1964 | 1,675 | | 1963 | 1,664 | | 1962 | 1,646 | | 1961 | 1,624 | | 1960 | 1,599 |
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