| Year | Value | | 2022 | 8,849 | | 2021 | 9,278 | | 2020 | 9,803 | | 2019 | 10,230 | | 2018 | 10,554 | | 2017 | 10,958 | | 2016 | 11,453 | | 2015 | 12,047 | | 2014 | 12,750 | | 2013 | 13,569 | | 2012 | 12,655 | | 2011 | 10,127 | | 2010 | 7,950 | | 2009 | 6,118 | | 2008 | 4,628 | | 2007 | 3,914 | | 2006 | 3,811 | | 2005 | 3,719 | | 2004 | 3,636 | | 2003 | 3,561 | | 2002 | 3,499 | | 2001 | 3,456 | | 2000 | 3,380 | | 1999 | 3,259 | | 1998 | 3,152 | | 1997 | 3,059 | | 1996 | 3,016 | | 1995 | 3,027 | | 1994 | 2,985 | | 1993 | 2,876 | | 1992 | 2,679 | | 1991 | 2,491 | | 1990 | 2,396 | | 1989 | 2,331 | | 1988 | 2,270 | | 1987 | 2,184 | | 1986 | 2,104 | | 1985 | 2,027 | | 1984 | 1,952 | | 1983 | 1,882 | | 1982 | 1,815 | | 1981 | 1,749 | | 1980 | 1,686 | | 1979 | 1,626 | | 1978 | 1,569 | | 1977 | 1,516 | | 1976 | 1,458 | | 1975 | 1,393 | | 1974 | 1,327 | | 1973 | 1,261 | | 1972 | 1,197 | | 1971 | 1,135 | | 1970 | 1,074 | | 1969 | 1,013 | | 1968 | 955 | | 1967 | 897 | | 1966 | 839 | | 1965 | 784 | | 1964 | 730 | | 1963 | 677 | | 1962 | 625 | | 1961 | 576 | | 1960 | 527 |
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