Year | Value | 2022 | 11,361 | 2021 | 11,040 | 2020 | 10,938 | 2019 | 10,927 | 2018 | 10,867 | 2017 | 10,815 | 2016 | 10,826 | 2015 | 10,828 | 2014 | 10,859 | 2013 | 11,011 | 2012 | 11,203 | 2011 | 11,300 | 2010 | 11,452 | 2009 | 11,636 | 2008 | 11,591 | 2007 | 11,327 | 2006 | 10,990 | 2005 | 10,635 | 2004 | 10,324 | 2003 | 10,158 | 2002 | 10,166 | 2001 | 10,346 | 2000 | 10,531 | 1999 | 10,665 | 1998 | 10,675 | 1997 | 10,535 | 1996 | 10,408 | 1995 | 10,317 | 1994 | 10,173 | 1993 | 10,158 | 1992 | 10,380 | 1991 | 10,474 | 1990 | 10,346 | 1989 | 10,330 | 1988 | 10,243 | 1987 | 10,003 | 1986 | 10,020 | 1985 | 10,288 | 1984 | 10,585 | 1983 | 10,879 | 1982 | 11,083 | 1981 | 11,065 | 1980 | 11,038 | 1979 | 11,035 | 1978 | 10,945 | 1977 | 10,919 | 1976 | 10,968 | 1975 | 10,913 | 1974 | 10,718 | 1973 | 10,511 | 1972 | 10,236 | 1971 | 9,943 | 1970 | 9,736 | 1969 | 9,544 | 1968 | 9,378 | 1967 | 9,229 | 1966 | 8,949 | 1965 | 8,626 | 1964 | 8,348 | 1963 | 8,014 | 1962 | 7,686 | 1961 | 7,364 | 1960 | 6,991 |
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