Year | Value | 2022 | 11,234 | 2021 | 11,052 | 2020 | 11,175 | 2019 | 11,257 | 2018 | 11,256 | 2017 | 11,502 | 2016 | 11,996 | 2015 | 12,435 | 2014 | 12,684 | 2013 | 12,915 | 2012 | 13,154 | 2011 | 13,318 | 2010 | 13,532 | 2009 | 13,872 | 2008 | 14,180 | 2007 | 14,388 | 2006 | 14,537 | 2005 | 14,686 | 2004 | 14,726 | 2003 | 14,709 | 2002 | 14,792 | 2001 | 14,860 | 2000 | 14,816 | 1999 | 14,847 | 1998 | 14,917 | 1997 | 14,873 | 1996 | 14,885 | 1995 | 15,033 | 1994 | 15,090 | 1993 | 14,980 | 1992 | 14,724 | 1991 | 14,397 | 1990 | 13,800 | 1989 | 13,367 | 1988 | 12,935 | 1987 | 12,628 | 1986 | 12,435 | 1985 | 12,180 | 1984 | 12,153 | 1983 | 12,570 | 1982 | 12,964 | 1981 | 13,340 | 1980 | 14,037 | 1979 | 14,678 | 1978 | 15,147 | 1977 | 15,522 | 1976 | 15,864 | 1975 | 15,962 | 1974 | 15,868 | 1973 | 15,892 | 1972 | 15,835 | 1971 | 15,761 | 1970 | 15,777 | 1969 | 16,043 | 1968 | 16,523 | 1967 | 17,035 | 1966 | 17,559 | 1965 | 18,002 | 1964 | 18,150 | 1963 | 17,984 | 1962 | 17,558 | 1961 | 16,796 | 1960 | 15,788 |
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