Year | Value | 2022 | 12,603 | 2021 | 12,890 | 2020 | 13,150 | 2019 | 13,339 | 2018 | 13,378 | 2017 | 13,162 | 2016 | 12,892 | 2015 | 12,830 | 2014 | 12,770 | 2013 | 12,604 | 2012 | 12,423 | 2011 | 12,168 | 2010 | 11,836 | 2009 | 11,781 | 2008 | 11,748 | 2007 | 11,285 | 2006 | 10,976 | 2005 | 11,022 | 2004 | 11,166 | 2003 | 11,274 | 2002 | 11,210 | 2001 | 11,037 | 2000 | 10,802 | 1999 | 10,504 | 1998 | 10,429 | 1997 | 10,610 | 1996 | 10,674 | 1995 | 10,613 | 1994 | 10,617 | 1993 | 10,550 | 1992 | 10,428 | 1991 | 10,420 | 1990 | 10,632 | 1989 | 10,974 | 1988 | 11,161 | 1987 | 11,207 | 1986 | 11,220 | 1985 | 11,246 | 1984 | 11,343 | 1983 | 11,328 | 1982 | 11,212 | 1981 | 11,173 | 1980 | 11,070 | 1979 | 10,873 | 1978 | 10,748 | 1977 | 10,614 | 1976 | 10,360 | 1975 | 10,164 | 1974 | 9,981 | 1973 | 9,699 | 1972 | 9,410 | 1971 | 9,174 | 1970 | 8,959 | 1969 | 8,735 | 1968 | 8,480 | 1967 | 8,125 | 1966 | 7,674 | 1965 | 7,152 | 1964 | 6,658 | 1963 | 6,295 | 1962 | 6,045 | 1961 | 5,860 | 1960 | 5,800 |
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