Year | Value | 2022 | 11,906 | 2021 | 11,500 | 2020 | 11,170 | 2019 | 10,983 | 2018 | 10,880 | 2017 | 10,849 | 2016 | 10,992 | 2015 | 11,313 | 2014 | 11,660 | 2013 | 11,917 | 2012 | 12,064 | 2011 | 12,101 | 2010 | 12,031 | 2009 | 11,845 | 2008 | 11,526 | 2007 | 11,116 | 2006 | 10,829 | 2005 | 10,718 | 2004 | 10,651 | 2003 | 10,634 | 2002 | 10,722 | 2001 | 10,854 | 2000 | 10,905 | 1999 | 10,969 | 1998 | 11,109 | 1997 | 11,269 | 1996 | 11,454 | 1995 | 11,672 | 1994 | 11,816 | 1993 | 11,844 | 1992 | 11,757 | 1991 | 11,424 | 1990 | 11,001 | 1989 | 10,725 | 1988 | 10,512 | 1987 | 10,367 | 1986 | 10,505 | 1985 | 10,882 | 1984 | 11,219 | 1983 | 11,252 | 1982 | 11,039 | 1981 | 10,823 | 1980 | 10,667 | 1979 | 10,491 | 1978 | 10,535 | 1977 | 10,854 | 1976 | 11,081 | 1975 | 11,044 | 1974 | 10,939 | 1973 | 10,802 | 1972 | 10,592 | 1971 | 10,564 | 1970 | 10,884 | 1969 | 11,313 | 1968 | 11,657 | 1967 | 11,862 | 1966 | 11,874 | 1965 | 11,862 | 1964 | 11,951 | 1963 | 11,955 | 1962 | 11,920 | 1961 | 11,953 | 1960 | 11,831 |
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