Year | Value | 2022 | 10,104 | 2021 | 10,267 | 2020 | 10,477 | 2019 | 10,745 | 2018 | 10,988 | 2017 | 11,209 | 2016 | 11,463 | 2015 | 11,738 | 2014 | 11,983 | 2013 | 12,211 | 2012 | 12,362 | 2011 | 12,397 | 2010 | 12,348 | 2009 | 12,238 | 2008 | 12,160 | 2007 | 12,197 | 2006 | 12,328 | 2005 | 12,494 | 2004 | 12,690 | 2003 | 12,781 | 2002 | 12,763 | 2001 | 12,751 | 2000 | 12,769 | 1999 | 12,880 | 1998 | 13,196 | 1997 | 13,608 | 1996 | 13,968 | 1995 | 14,334 | 1994 | 14,665 | 1993 | 14,945 | 1992 | 15,128 | 1991 | 15,159 | 1990 | 15,113 | 1989 | 14,979 | 1988 | 14,614 | 1987 | 14,124 | 1986 | 13,690 | 1985 | 13,193 | 1984 | 12,640 | 1983 | 12,210 | 1982 | 11,915 | 1981 | 11,641 | 1980 | 11,423 | 1979 | 11,308 | 1978 | 11,257 | 1977 | 11,193 | 1976 | 11,115 | 1975 | 11,053 | 1974 | 10,990 | 1973 | 10,905 | 1972 | 10,791 | 1971 | 10,612 | 1970 | 10,368 | 1969 | 10,099 | 1968 | 9,815 | 1967 | 9,527 | 1966 | 9,240 | 1965 | 8,960 | 1964 | 8,687 | 1963 | 8,440 | 1962 | 8,235 | 1961 | 8,043 | 1960 | 7,836 |
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