| Year | Value | | 2022 | 5,451 | | 2021 | 5,344 | | 2020 | 5,194 | | 2019 | 5,019 | | 2018 | 4,844 | | 2017 | 4,670 | | 2016 | 4,490 | | 2015 | 4,306 | | 2014 | 4,123 | | 2013 | 3,934 | | 2012 | 3,737 | | 2011 | 3,547 | | 2010 | 3,373 | | 2009 | 3,207 | | 2008 | 3,064 | | 2007 | 2,970 | | 2006 | 2,914 | | 2005 | 2,862 | | 2004 | 2,782 | | 2003 | 2,660 | | 2002 | 2,488 | | 2001 | 2,286 | | 2000 | 2,134 | | 1999 | 2,047 | | 1998 | 1,989 | | 1997 | 1,939 | | 1996 | 1,890 | | 1995 | 1,837 | | 1994 | 1,781 | | 1993 | 1,709 | | 1992 | 1,615 | | 1991 | 1,548 | | 1990 | 1,521 | | 1989 | 1,499 | | 1988 | 1,483 | | 1987 | 1,476 | | 1986 | 1,472 | | 1985 | 1,465 | | 1984 | 1,460 | | 1983 | 1,459 | | 1982 | 1,458 | | 1981 | 1,456 | | 1980 | 1,462 | | 1979 | 1,476 | | 1978 | 1,486 | | 1977 | 1,494 | | 1976 | 1,498 | | 1975 | 1,495 | | 1974 | 1,483 | | 1973 | 1,465 | | 1972 | 1,443 | | 1971 | 1,415 | | 1970 | 1,382 | | 1969 | 1,350 | | 1968 | 1,322 | | 1967 | 1,288 | | 1966 | 1,251 | | 1965 | 1,215 | | 1964 | 1,181 | | 1963 | 1,148 | | 1962 | 1,116 | | 1961 | 1,086 | | 1960 | 1,056 |
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