Year | Value | 2022 | 35,680 | 2021 | 35,137 | 2020 | 34,531 | 2019 | 33,904 | 2018 | 33,282 | 2017 | 32,756 | 2016 | 32,334 | 2015 | 31,960 | 2014 | 31,523 | 2013 | 30,985 | 2012 | 30,381 | 2011 | 29,757 | 2010 | 29,125 | 2009 | 28,520 | 2008 | 27,930 | 2007 | 26,902 | 2006 | 25,888 | 2005 | 25,268 | 2004 | 25,385 | 2003 | 26,240 | 2002 | 27,010 | 2001 | 27,804 | 2000 | 28,754 | 1999 | 28,929 | 1998 | 28,454 | 1997 | 28,377 | 1996 | 28,640 | 1995 | 29,027 | 1994 | 29,356 | 1993 | 29,642 | 1992 | 29,898 | 1991 | 30,105 | 1990 | 30,273 | 1989 | 30,354 | 1988 | 30,273 | 1987 | 29,990 | 1986 | 29,534 | 1985 | 28,793 | 1984 | 27,751 | 1983 | 26,622 | 1982 | 25,510 | 1981 | 24,458 | 1980 | 23,500 | 1979 | 22,653 | 1978 | 21,922 | 1977 | 21,284 | 1976 | 20,628 | 1975 | 19,853 | 1974 | 19,006 | 1973 | 18,181 | 1972 | 17,389 | 1971 | 16,596 | 1970 | 15,768 | 1969 | 14,884 | 1968 | 13,953 | 1967 | 13,004 | 1966 | 12,059 | 1965 | 11,213 | 1964 | 10,521 | 1963 | 9,910 | 1962 | 9,361 | 1961 | 8,880 | 1960 | 8,470 |
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