Year | Value | 2022 | 31,816 | 2021 | 30,974 | 2020 | 30,059 | 2019 | 29,065 | 2018 | 28,017 | 2017 | 26,944 | 2016 | 25,871 | 2015 | 24,815 | 2014 | 23,783 | 2013 | 22,781 | 2012 | 21,814 | 2011 | 20,891 | 2010 | 20,008 | 2009 | 19,162 | 2008 | 18,362 | 2007 | 17,615 | 2006 | 16,901 | 2005 | 16,268 | 2004 | 15,730 | 2003 | 15,232 | 2002 | 14,685 | 2001 | 14,095 | 2000 | 13,636 | 1999 | 13,350 | 1998 | 13,128 | 1997 | 12,860 | 1996 | 12,617 | 1995 | 12,422 | 1994 | 12,259 | 1993 | 11,895 | 1992 | 11,986 | 1991 | 11,971 | 1990 | 10,911 | 1989 | 9,793 | 1988 | 9,028 | 1987 | 8,440 | 1986 | 7,898 | 1985 | 7,440 | 1984 | 7,079 | 1983 | 6,794 | 1982 | 6,545 | 1981 | 6,279 | 1980 | 5,955 | 1979 | 5,558 | 1978 | 5,103 | 1977 | 4,632 | 1976 | 4,192 | 1975 | 3,809 | 1974 | 3,491 | 1973 | 3,233 | 1972 | 3,012 | 1971 | 2,810 | 1970 | 2,631 | 1969 | 2,466 | 1968 | 2,324 | 1967 | 2,203 | 1966 | 2,083 | 1965 | 1,968 | 1964 | 1,858 | 1963 | 1,757 | 1962 | 1,667 | 1961 | 1,592 | 1960 | 1,528 |
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