| Year | Value | | 2022 | 2,954 | | 2021 | 3,008 | | 2020 | 3,002 | | 2019 | 2,926 | | 2018 | 2,854 | | 2017 | 2,781 | | 2016 | 2,706 | | 2015 | 2,630 | | 2014 | 2,559 | | 2013 | 2,489 | | 2012 | 2,400 | | 2011 | 2,295 | | 2010 | 2,176 | | 2009 | 2,056 | | 2008 | 1,958 | | 2007 | 1,887 | | 2006 | 1,827 | | 2005 | 1,774 | | 2004 | 1,723 | | 2003 | 1,576 | | 2002 | 1,355 | | 2001 | 1,175 | | 2000 | 1,034 | | 1999 | 931 | | 1998 | 861 | | 1997 | 819 | | 1996 | 795 | | 1995 | 781 | | 1994 | 779 | | 1993 | 788 | | 1992 | 800 | | 1991 | 812 | | 1990 | 827 | | 1989 | 843 | | 1988 | 860 | | 1987 | 888 | | 1986 | 929 | | 1985 | 977 | | 1984 | 1,038 | | 1983 | 1,115 | | 1982 | 1,207 | | 1981 | 1,314 | | 1980 | 1,436 | | 1979 | 1,452 | | 1978 | 1,355 | | 1977 | 1,268 | | 1976 | 1,191 | | 1975 | 1,124 | | 1974 | 1,075 | | 1973 | 1,046 | | 1972 | 1,042 | | 1971 | 1,029 | | 1970 | 1,000 | | 1969 | 985 | | 1968 | 981 | | 1967 | 981 | | 1966 | 983 | | 1965 | 984 | | 1964 | 941 | | 1963 | 771 | | 1962 | 549 | | 1961 | 428 | | 1960 | 375 |
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