Year | Value | 2022 | 34,420 | 2021 | 33,629 | 2020 | 32,712 | 2019 | 31,606 | 2018 | 30,529 | 2017 | 29,592 | 2016 | 28,769 | 2015 | 28,030 | 2014 | 27,367 | 2013 | 26,768 | 2012 | 26,226 | 2011 | 25,739 | 2010 | 25,307 | 2009 | 24,924 | 2008 | 24,568 | 2007 | 24,240 | 2006 | 23,968 | 2005 | 23,774 | 2004 | 23,654 | 2003 | 23,605 | 2002 | 23,598 | 2001 | 23,575 | 2000 | 23,498 | 1999 | 23,358 | 1998 | 23,129 | 1997 | 22,817 | 1996 | 22,481 | 1995 | 22,158 | 1994 | 21,848 | 1993 | 21,555 | 1992 | 21,278 | 1991 | 20,975 | 1990 | 20,617 | 1989 | 20,208 | 1988 | 19,752 | 1987 | 19,260 | 1986 | 18,772 | 1985 | 18,310 | 1984 | 17,871 | 1983 | 17,451 | 1982 | 17,018 | 1981 | 16,543 | 1980 | 16,026 | 1979 | 15,465 | 1978 | 14,864 | 1977 | 14,229 | 1976 | 13,583 | 1975 | 12,945 | 1974 | 12,309 | 1973 | 11,659 | 1972 | 11,020 | 1971 | 10,444 | 1970 | 9,965 | 1969 | 9,578 | 1968 | 9,290 | 1967 | 9,085 | 1966 | 8,908 | 1965 | 8,727 | 1964 | 8,558 | 1963 | 8,403 | 1962 | 8,241 | 1961 | 8,071 | 1960 | 7,890 |
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