| Year | Value | | 2022 | 20,054 | | 2021 | 18,636 | | 2020 | 16,883 | | 2019 | 14,410 | | 2018 | 11,360 | | 2017 | 8,818 | | 2016 | 6,716 | | 2015 | 5,134 | | 2014 | 4,119 | | 2013 | 3,459 | | 2012 | 2,908 | | 2011 | 2,278 | | 2010 | 1,484 | | 2009 | 1,633 | | 2008 | 2,855 | | 2007 | 4,026 | | 2006 | 4,864 | | 2005 | 5,139 | | 2004 | 4,982 | | 2003 | 4,739 | | 2002 | 4,558 | | 2001 | 4,452 | | 2000 | 4,380 | | 1999 | 4,289 | | 1998 | 4,144 | | 1997 | 3,937 | | 1996 | 3,693 | | 1995 | 3,482 | | 1994 | 3,330 | | 1993 | 3,204 | | 1992 | 3,090 | | 1991 | 2,977 | | 1990 | 2,868 | | 1989 | 2,769 | | 1988 | 2,689 | | 1987 | 2,631 | | 1986 | 2,585 | | 1985 | 2,503 | | 1984 | 2,375 | | 1983 | 2,254 | | 1982 | 2,167 | | 1981 | 2,110 | | 1980 | 2,019 | | 1979 | 1,879 | | 1978 | 1,774 | | 1977 | 1,761 | | 1976 | 1,827 | | 1975 | 1,769 | | 1974 | 1,545 | | 1973 | 1,308 | | 1972 | 1,083 | | 1971 | 894 | | 1970 | 739 | | 1969 | 611 | | 1968 | 517 | | 1967 | 469 | | 1966 | 454 | | 1965 | 448 | | 1964 | 447 | | 1963 | 445 | | 1962 | 441 | | 1961 | 437 | | 1960 | 435 |
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