Year | Value | 2022 | 37,489 | 2021 | 35,953 | 2020 | 34,632 | 2019 | 33,507 | 2018 | 32,445 | 2017 | 31,312 | 2016 | 30,253 | 2015 | 29,213 | 2014 | 28,017 | 2013 | 26,817 | 2012 | 25,735 | 2011 | 24,821 | 2010 | 24,085 | 2009 | 23,488 | 2008 | 22,956 | 2007 | 22,428 | 2006 | 21,889 | 2005 | 21,228 | 2004 | 20,307 | 2003 | 19,276 | 2002 | 18,320 | 2001 | 17,447 | 2000 | 16,654 | 1999 | 15,945 | 1998 | 15,427 | 1997 | 15,121 | 1996 | 14,893 | 1995 | 14,679 | 1994 | 14,595 | 1993 | 14,700 | 1992 | 15,557 | 1991 | 16,335 | 1990 | 16,238 | 1989 | 16,112 | 1988 | 16,063 | 1987 | 16,096 | 1986 | 16,217 | 1985 | 16,330 | 1984 | 16,281 | 1983 | 16,073 | 1982 | 15,752 | 1981 | 15,314 | 1980 | 14,853 | 1979 | 14,388 | 1978 | 13,937 | 1977 | 13,504 | 1976 | 13,082 | 1975 | 12,665 | 1974 | 12,252 | 1973 | 11,837 | 1972 | 11,418 | 1971 | 10,998 | 1970 | 10,585 | 1969 | 10,173 | 1968 | 9,762 | 1967 | 9,361 | 1966 | 8,971 | 1965 | 8,595 | 1964 | 8,237 | 1963 | 7,891 | 1962 | 7,557 | 1961 | 7,248 | 1960 | 6,964 |
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