| Year | Value | | 2022 | 5,752 | | 2021 | 5,516 | | 2020 | 5,279 | | 2019 | 5,041 | | 2018 | 4,810 | | 2017 | 4,601 | | 2016 | 4,411 | | 2015 | 4,230 | | 2014 | 4,053 | | 2013 | 3,873 | | 2012 | 3,688 | | 2011 | 3,497 | | 2010 | 3,305 | | 2009 | 3,092 | | 2008 | 2,870 | | 2007 | 2,679 | | 2006 | 2,531 | | 2005 | 2,425 | | 2004 | 2,359 | | 2003 | 2,323 | | 2002 | 2,291 | | 2001 | 2,244 | | 2000 | 2,171 | | 1999 | 2,076 | | 1998 | 1,974 | | 1997 | 1,880 | | 1996 | 1,815 | | 1995 | 1,786 | | 1994 | 1,785 | | 1993 | 1,797 | | 1992 | 1,818 | | 1991 | 1,822 | | 1990 | 1,802 | | 1989 | 1,774 | | 1988 | 1,724 | | 1987 | 1,655 | | 1986 | 1,587 | | 1985 | 1,531 | | 1984 | 1,482 | | 1983 | 1,441 | | 1982 | 1,402 | | 1981 | 1,362 | | 1980 | 1,331 | | 1979 | 1,312 | | 1978 | 1,305 | | 1977 | 1,313 | | 1976 | 1,330 | | 1975 | 1,340 | | 1974 | 1,347 | | 1973 | 1,353 | | 1972 | 1,346 | | 1971 | 1,327 | | 1970 | 1,299 | | 1969 | 1,270 | | 1968 | 1,242 | | 1967 | 1,214 | | 1966 | 1,188 | | 1965 | 1,161 | | 1964 | 1,135 | | 1963 | 1,110 | | 1962 | 1,081 | | 1961 | 1,051 | | 1960 | 1,019 |
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