Year | Value | 2022 | 31,023 | 2021 | 29,751 | 2020 | 28,296 | 2019 | 26,721 | 2018 | 25,177 | 2017 | 23,788 | 2016 | 22,786 | 2015 | 22,170 | 2014 | 21,724 | 2013 | 21,363 | 2012 | 21,007 | 2011 | 20,621 | 2010 | 20,176 | 2009 | 19,679 | 2008 | 19,161 | 2007 | 18,655 | 2006 | 18,185 | 2005 | 17,656 | 2004 | 16,952 | 2003 | 16,209 | 2002 | 15,563 | 2001 | 14,996 | 2000 | 14,486 | 1999 | 14,029 | 1998 | 13,688 | 1997 | 13,473 | 1996 | 13,300 | 1995 | 13,110 | 1994 | 13,135 | 1993 | 13,435 | 1992 | 14,544 | 1991 | 15,697 | 1990 | 16,003 | 1989 | 16,002 | 1988 | 15,809 | 1987 | 15,505 | 1986 | 15,083 | 1985 | 14,644 | 1984 | 14,212 | 1983 | 13,799 | 1982 | 13,404 | 1981 | 13,016 | 1980 | 12,623 | 1979 | 12,222 | 1978 | 11,812 | 1977 | 11,394 | 1976 | 10,978 | 1975 | 10,567 | 1974 | 10,160 | 1973 | 9,752 | 1972 | 9,348 | 1971 | 8,953 | 1970 | 8,569 | 1969 | 8,198 | 1968 | 7,838 | 1967 | 7,493 | 1966 | 7,165 | 1965 | 6,852 | 1964 | 6,558 | 1963 | 6,282 | 1962 | 6,022 | 1961 | 5,786 | 1960 | 5,573 |
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