Year | Value | 2022 | 25,760 | 2021 | 25,738 | 2020 | 25,874 | 2019 | 26,176 | 2018 | 26,893 | 2017 | 28,001 | 2016 | 29,505 | 2015 | 31,564 | 2014 | 31,759 | 2013 | 29,801 | 2012 | 27,913 | 2011 | 26,152 | 2010 | 24,615 | 2009 | 23,411 | 2008 | 22,635 | 2007 | 22,250 | 2006 | 22,262 | 2005 | 22,571 | 2004 | 22,091 | 2003 | 20,713 | 2002 | 19,240 | 2001 | 17,681 | 2000 | 16,133 | 1999 | 14,685 | 1998 | 13,336 | 1997 | 12,074 | 1996 | 11,273 | 1995 | 10,886 | 1994 | 10,505 | 1993 | 10,116 | 1992 | 9,723 | 1991 | 9,341 | 1990 | 8,976 | 1989 | 8,622 | 1988 | 8,279 | 1987 | 7,956 | 1986 | 7,631 | 1985 | 7,294 | 1984 | 6,954 | 1983 | 6,615 | 1982 | 6,280 | 1981 | 5,963 | 1980 | 5,683 | 1979 | 5,448 | 1978 | 5,254 | 1977 | 5,088 | 1976 | 4,930 | 1975 | 4,753 | 1974 | 4,553 | 1973 | 4,331 | 1972 | 4,095 | 1971 | 3,857 | 1970 | 3,628 | 1969 | 3,406 | 1968 | 3,187 | 1967 | 2,972 | 1966 | 2,765 | 1965 | 2,567 | 1964 | 2,380 | 1963 | 2,208 | 1962 | 2,045 | 1961 | 1,872 | 1960 | 1,678 |
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