Year | Value | 2022 | 3,454 | 2021 | 3,565 | 2020 | 3,589 | 2019 | 3,547 | 2018 | 3,488 | 2017 | 3,308 | 2016 | 3,010 | 2015 | 2,824 | 2014 | 2,790 | 2013 | 2,779 | 2012 | 2,813 | 2011 | 2,878 | 2010 | 2,917 | 2009 | 2,895 | 2008 | 2,822 | 2007 | 2,729 | 2006 | 2,635 | 2005 | 2,550 | 2004 | 2,475 | 2003 | 2,407 | 2002 | 2,358 | 2001 | 2,334 | 2000 | 2,317 | 1999 | 2,307 | 1998 | 2,314 | 1997 | 2,327 | 1996 | 2,312 | 1995 | 2,279 | 1994 | 2,232 | 1993 | 2,172 | 1992 | 2,119 | 1991 | 2,086 | 1990 | 2,071 | 1989 | 2,070 | 1988 | 2,103 | 1987 | 2,179 | 1986 | 2,244 | 1985 | 2,283 | 1984 | 2,321 | 1983 | 2,348 | 1982 | 2,336 | 1981 | 2,299 | 1980 | 2,267 | 1979 | 2,218 | 1978 | 2,157 | 1977 | 2,099 | 1976 | 2,053 | 1975 | 2,025 | 1974 | 1,999 | 1973 | 1,959 | 1972 | 1,908 | 1971 | 1,868 | 1970 | 1,827 | 1969 | 1,768 | 1968 | 1,714 | 1967 | 1,686 | 1966 | 1,668 | 1965 | 1,654 | 1964 | 1,646 | 1963 | 1,633 | 1962 | 1,607 | 1961 | 1,571 | 1960 | 1,551 |
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