| Year | Value | | 2022 | 7,004 | | 2021 | 6,646 | | 2020 | 6,302 | | 2019 | 6,005 | | 2018 | 5,750 | | 2017 | 5,538 | | 2016 | 5,394 | | 2015 | 5,291 | | 2014 | 5,193 | | 2013 | 5,091 | | 2012 | 4,975 | | 2011 | 4,845 | | 2010 | 4,711 | | 2009 | 4,565 | | 2008 | 4,403 | | 2007 | 4,241 | | 2006 | 4,083 | | 2005 | 3,931 | | 2004 | 3,795 | | 2003 | 3,677 | | 2002 | 3,570 | | 2001 | 3,472 | | 2000 | 3,377 | | 1999 | 3,279 | | 1998 | 3,179 | | 1997 | 3,080 | | 1996 | 2,984 | | 1995 | 2,891 | | 1994 | 2,800 | | 1993 | 2,714 | | 1992 | 2,628 | | 1991 | 2,545 | | 1990 | 2,464 | | 1989 | 2,385 | | 1988 | 2,306 | | 1987 | 2,227 | | 1986 | 2,149 | | 1985 | 2,074 | | 1984 | 1,999 | | 1983 | 1,923 | | 1982 | 1,845 | | 1981 | 1,766 | | 1980 | 1,684 | | 1979 | 1,602 | | 1978 | 1,522 | | 1977 | 1,445 | | 1976 | 1,375 | | 1975 | 1,318 | | 1974 | 1,282 | | 1973 | 1,262 | | 1972 | 1,252 | | 1971 | 1,248 | | 1970 | 1,232 | | 1969 | 1,199 | | 1968 | 1,165 | | 1967 | 1,131 | | 1966 | 1,095 | | 1965 | 1,058 | | 1964 | 1,023 | | 1963 | 990 | | 1962 | 959 | | 1961 | 931 | | 1960 | 906 |
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