Year | Value | 2022 | 25,759 | 2021 | 24,984 | 2020 | 24,535 | 2019 | 24,504 | 2018 | 24,759 | 2017 | 24,999 | 2016 | 25,188 | 2015 | 25,371 | 2014 | 25,552 | 2013 | 25,763 | 2012 | 26,025 | 2011 | 26,130 | 2010 | 26,076 | 2009 | 26,008 | 2008 | 25,842 | 2007 | 25,511 | 2006 | 25,122 | 2005 | 24,665 | 2004 | 24,019 | 2003 | 23,209 | 2002 | 22,305 | 2001 | 21,295 | 2000 | 20,169 | 1999 | 19,229 | 1998 | 18,539 | 1997 | 17,908 | 1996 | 17,444 | 1995 | 17,209 | 1994 | 16,875 | 1993 | 16,420 | 1992 | 16,075 | 1991 | 15,825 | 1990 | 15,617 | 1989 | 15,431 | 1988 | 15,246 | 1987 | 15,012 | 1986 | 14,629 | 1985 | 14,150 | 1984 | 13,699 | 1983 | 13,247 | 1982 | 12,793 | 1981 | 12,340 | 1980 | 11,891 | 1979 | 11,448 | 1978 | 11,023 | 1977 | 10,618 | 1976 | 10,262 | 1975 | 9,960 | 1974 | 9,679 | 1973 | 9,422 | 1972 | 9,199 | 1971 | 9,020 | 1970 | 8,876 | 1969 | 8,757 | 1968 | 8,657 | 1967 | 8,562 | 1966 | 8,433 | 1965 | 8,281 | 1964 | 8,129 | 1963 | 7,957 | 1962 | 7,747 | 1961 | 7,499 | 1960 | 7,224 |
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