| Year | Value | | 2022 | 10,168 | | 2021 | 9,313 | | 2020 | 8,884 | | 2019 | 8,562 | | 2018 | 8,166 | | 2017 | 7,959 | | 2016 | 7,691 | | 2015 | 7,052 | | 2014 | 5,890 | | 2013 | 4,451 | | 2012 | 3,069 | | 2011 | 1,966 | | 2010 | 1,255 | | 2009 | 1,207 | | 2008 | 1,646 | | 2007 | 2,072 | | 2006 | 2,360 | | 2005 | 2,450 | | 2004 | 2,485 | | 2003 | 2,550 | | 2002 | 2,578 | | 2001 | 2,554 | | 2000 | 2,493 | | 1999 | 2,418 | | 1998 | 2,347 | | 1997 | 2,282 | | 1996 | 2,217 | | 1995 | 2,143 | | 1994 | 2,056 | | 1993 | 1,969 | | 1992 | 1,890 | | 1991 | 1,828 | | 1990 | 1,775 | | 1989 | 1,723 | | 1988 | 1,664 | | 1987 | 1,597 | | 1986 | 1,523 | | 1985 | 1,449 | | 1984 | 1,378 | | 1983 | 1,309 | | 1982 | 1,232 | | 1981 | 1,143 | | 1980 | 1,095 | | 1979 | 1,103 | | 1978 | 1,107 | | 1977 | 1,086 | | 1976 | 1,035 | | 1975 | 904 | | 1974 | 729 | | 1973 | 595 | | 1972 | 489 | | 1971 | 406 | | 1970 | 341 | | 1969 | 288 | | 1968 | 250 | | 1967 | 235 | | 1966 | 238 | | 1965 | 241 | | 1964 | 245 | | 1963 | 246 | | 1962 | 250 | | 1961 | 252 | | 1960 | 252 |
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