| Year | Value | | 2022 | 4,246 | | 2021 | 4,098 | | 2020 | 3,941 | | 2019 | 3,774 | | 2018 | 3,602 | | 2017 | 3,425 | | 2016 | 3,255 | | 2015 | 3,099 | | 2014 | 2,966 | | 2013 | 2,869 | | 2012 | 2,802 | | 2011 | 2,761 | | 2010 | 2,736 | | 2009 | 2,696 | | 2008 | 2,615 | | 2007 | 2,493 | | 2006 | 2,336 | | 2005 | 2,180 | | 2004 | 2,050 | | 2003 | 1,955 | | 2002 | 1,895 | | 2001 | 1,865 | | 2000 | 1,865 | | 1999 | 1,887 | | 1998 | 1,902 | | 1997 | 1,883 | | 1996 | 1,832 | | 1995 | 1,756 | | 1994 | 1,661 | | 1993 | 1,563 | | 1992 | 1,477 | | 1991 | 1,436 | | 1990 | 1,435 | | 1989 | 1,431 | | 1988 | 1,429 | | 1987 | 1,427 | | 1986 | 1,423 | | 1985 | 1,417 | | 1984 | 1,411 | | 1983 | 1,400 | | 1982 | 1,385 | | 1981 | 1,368 | | 1980 | 1,356 | | 1979 | 1,347 | | 1978 | 1,331 | | 1977 | 1,311 | | 1976 | 1,285 | | 1975 | 1,254 | | 1974 | 1,221 | | 1973 | 1,187 | | 1972 | 1,150 | | 1971 | 1,111 | | 1970 | 1,072 | | 1969 | 1,036 | | 1968 | 1,004 | | 1967 | 975 | | 1966 | 948 | | 1965 | 919 | | 1964 | 892 | | 1963 | 869 | | 1962 | 846 | | 1961 | 825 | | 1960 | 808 |
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