Year | Value | 2022 | 31,762 | 2021 | 30,767 | 2020 | 29,707 | 2019 | 28,971 | 2018 | 28,554 | 2017 | 28,280 | 2016 | 28,325 | 2015 | 28,537 | 2014 | 28,429 | 2013 | 27,969 | 2012 | 27,376 | 2011 | 26,561 | 2010 | 25,691 | 2009 | 24,842 | 2008 | 24,009 | 2007 | 23,230 | 2006 | 22,592 | 2005 | 21,971 | 2004 | 21,308 | 2003 | 20,528 | 2002 | 19,763 | 2001 | 19,062 | 2000 | 18,419 | 1999 | 17,906 | 1998 | 17,362 | 1997 | 16,786 | 1996 | 16,257 | 1995 | 15,517 | 1994 | 14,782 | 1993 | 14,244 | 1992 | 13,736 | 1991 | 14,416 | 1990 | 15,054 | 1989 | 14,576 | 1988 | 14,099 | 1987 | 13,623 | 1986 | 13,169 | 1985 | 12,740 | 1984 | 12,330 | 1983 | 11,937 | 1982 | 11,564 | 1981 | 11,204 | 1980 | 10,853 | 1979 | 10,506 | 1978 | 10,164 | 1977 | 9,829 | 1976 | 9,518 | 1975 | 9,241 | 1974 | 8,990 | 1973 | 8,771 | 1972 | 8,578 | 1971 | 8,398 | 1970 | 8,226 | 1969 | 8,065 | 1968 | 7,915 | 1967 | 7,772 | 1966 | 7,639 | 1965 | 7,515 | 1964 | 7,398 | 1963 | 7,286 | 1962 | 7,185 | 1961 | 7,099 | 1960 | 7,026 |
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