Year | Value | 2022 | 9,389 | 2021 | 9,585 | 2020 | 9,766 | 2019 | 9,942 | 2018 | 10,120 | 2017 | 10,300 | 2016 | 10,449 | 2015 | 10,559 | 2014 | 10,599 | 2013 | 10,477 | 2012 | 10,320 | 2011 | 10,161 | 2010 | 10,023 | 2009 | 9,976 | 2008 | 10,007 | 2007 | 10,048 | 2006 | 10,117 | 2005 | 10,191 | 2004 | 10,287 | 2003 | 10,417 | 2002 | 10,525 | 2001 | 10,587 | 2000 | 10,595 | 1999 | 10,585 | 1998 | 10,586 | 1997 | 10,578 | 1996 | 10,591 | 1995 | 10,617 | 1994 | 10,527 | 1993 | 10,344 | 1992 | 10,168 | 1991 | 9,964 | 1990 | 9,720 | 1989 | 9,467 | 1988 | 9,259 | 1987 | 9,111 | 1986 | 9,015 | 1985 | 9,005 | 1984 | 9,049 | 1983 | 9,075 | 1982 | 9,077 | 1981 | 9,077 | 1980 | 9,119 | 1979 | 9,252 | 1978 | 9,442 | 1977 | 9,606 | 1976 | 9,730 | 1975 | 9,850 | 1974 | 9,872 | 1973 | 9,726 | 1972 | 9,495 | 1971 | 9,054 | 1970 | 8,419 | 1969 | 7,787 | 1968 | 7,439 | 1967 | 7,223 | 1966 | 7,014 | 1965 | 6,799 | 1964 | 6,615 | 1963 | 6,427 | 1962 | 6,238 | 1961 | 6,040 | 1960 | 5,837 |
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