| Year | Value | | 2022 | 47,054 | | 2021 | 43,003 | | 2020 | 36,365 | | 2019 | 29,361 | | 2018 | 22,358 | | 2017 | 17,058 | | 2016 | 12,961 | | 2015 | 9,706 | | 2014 | 7,086 | | 2013 | 4,959 | | 2012 | 3,218 | | 2011 | 1,804 | | 2010 | 665 | | 2009 | 325 | | 2008 | 1,960 | | 2007 | 5,208 | | 2006 | 8,052 | | 2005 | 9,280 | | 2004 | 9,494 | | 2003 | 9,414 | | 2002 | 9,019 | | 2001 | 8,416 | | 2000 | 7,759 | | 1999 | 7,191 | | 1998 | 6,787 | | 1997 | 6,544 | | 1996 | 6,398 | | 1995 | 6,263 | | 1994 | 6,031 | | 1993 | 5,677 | | 1992 | 5,281 | | 1991 | 4,907 | | 1990 | 4,579 | | 1989 | 4,299 | | 1988 | 4,054 | | 1987 | 3,838 | | 1986 | 3,650 | | 1985 | 3,564 | | 1984 | 3,551 | | 1983 | 3,485 | | 1982 | 3,331 | | 1981 | 3,116 | | 1980 | 3,060 | | 1979 | 3,162 | | 1978 | 3,150 | | 1977 | 2,946 | | 1976 | 2,596 | | 1975 | 2,184 | | 1974 | 1,841 | | 1973 | 1,632 | | 1972 | 1,478 | | 1971 | 1,331 | | 1970 | 1,174 | | 1969 | 1,019 | | 1968 | 888 | | 1967 | 825 | | 1966 | 805 | | 1965 | 772 | | 1964 | 737 | | 1963 | 709 | | 1962 | 690 | | 1961 | 676 | | 1960 | 667 |
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