Year | Value | 2022 | 20,693 | 2021 | 19,602 | 2020 | 18,535 | 2019 | 17,461 | 2018 | 16,413 | 2017 | 15,445 | 2016 | 14,562 | 2015 | 13,759 | 2014 | 13,025 | 2013 | 12,460 | 2012 | 12,203 | 2011 | 12,203 | 2010 | 12,343 | 2009 | 12,574 | 2008 | 12,733 | 2007 | 12,640 | 2006 | 12,354 | 2005 | 12,010 | 2004 | 11,675 | 2003 | 11,369 | 2002 | 11,133 | 2001 | 10,968 | 2000 | 10,839 | 1999 | 10,738 | 1998 | 10,671 | 1997 | 10,629 | 1996 | 10,581 | 1995 | 10,517 | 1994 | 10,431 | 1993 | 10,298 | 1992 | 10,094 | 1991 | 9,854 | 1990 | 9,619 | 1989 | 9,396 | 1988 | 9,186 | 1987 | 8,981 | 1986 | 8,754 | 1985 | 8,484 | 1984 | 8,176 | 1983 | 7,786 | 1982 | 7,336 | 1981 | 6,929 | 1980 | 6,581 | 1979 | 6,278 | 1978 | 6,031 | 1977 | 5,837 | 1976 | 5,652 | 1975 | 5,453 | 1974 | 5,253 | 1973 | 5,072 | 1972 | 4,905 | 1971 | 4,745 | 1970 | 4,596 | 1969 | 4,458 | 1968 | 4,323 | 1967 | 4,193 | 1966 | 4,070 | 1965 | 3,952 | 1964 | 3,839 | 1963 | 3,730 | 1962 | 3,623 | 1961 | 3,521 | 1960 | 3,422 |
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