Year | Value | 2022 | 39,213 | 2021 | 38,288 | 2020 | 37,480 | 2019 | 36,472 | 2018 | 35,461 | 2017 | 34,680 | 2016 | 33,805 | 2015 | 32,834 | 2014 | 31,810 | 2013 | 30,464 | 2012 | 28,965 | 2011 | 27,990 | 2010 | 27,362 | 2009 | 26,664 | 2008 | 26,157 | 2007 | 25,734 | 2006 | 25,315 | 2005 | 24,865 | 2004 | 24,302 | 2003 | 23,676 | 2002 | 23,027 | 2001 | 22,367 | 2000 | 21,672 | 1999 | 20,990 | 1998 | 20,299 | 1997 | 19,598 | 1996 | 19,026 | 1995 | 18,426 | 1994 | 17,851 | 1993 | 17,051 | 1992 | 17,056 | 1991 | 18,907 | 1990 | 20,276 | 1989 | 20,538 | 1988 | 21,118 | 1987 | 21,319 | 1986 | 20,717 | 1985 | 20,016 | 1984 | 19,343 | 1983 | 18,758 | 1982 | 18,266 | 1981 | 18,291 | 1980 | 18,221 | 1979 | 16,765 | 1978 | 14,833 | 1977 | 13,833 | 1976 | 13,502 | 1975 | 13,219 | 1974 | 12,948 | 1973 | 12,642 | 1972 | 12,298 | 1971 | 11,954 | 1970 | 11,605 | 1969 | 11,249 | 1968 | 10,886 | 1967 | 10,520 | 1966 | 10,157 | 1965 | 9,803 | 1964 | 9,458 | 1963 | 9,119 | 1962 | 8,786 | 1961 | 8,450 | 1960 | 8,105 |
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