Year | Value | 2022 | 52,152 | 2021 | 51,699 | 2020 | 51,181 | 2019 | 50,561 | 2018 | 49,918 | 2017 | 49,410 | 2016 | 48,968 | 2015 | 48,710 | 2014 | 48,060 | 2013 | 47,473 | 2012 | 47,316 | 2011 | 47,012 | 2010 | 46,818 | 2009 | 46,637 | 2008 | 46,429 | 2007 | 46,219 | 2006 | 45,990 | 2005 | 45,738 | 2004 | 45,464 | 2003 | 45,168 | 2002 | 44,841 | 2001 | 44,560 | 2000 | 44,606 | 1999 | 44,777 | 1998 | 44,873 | 1997 | 44,906 | 1996 | 44,901 | 1995 | 44,864 | 1994 | 44,802 | 1993 | 44,722 | 1992 | 44,625 | 1991 | 44,583 | 1990 | 43,828 | 1989 | 43,000 | 1988 | 42,096 | 1987 | 41,152 | 1986 | 40,181 | 1985 | 39,170 | 1984 | 38,119 | 1983 | 37,043 | 1982 | 35,967 | 1981 | 34,856 | 1980 | 34,124 | 1979 | 33,426 | 1978 | 32,698 | 1977 | 31,957 | 1976 | 31,199 | 1975 | 30,424 | 1974 | 29,649 | 1973 | 28,880 | 1972 | 28,132 | 1971 | 27,404 | 1970 | 26,651 | 1969 | 26,147 | 1968 | 25,663 | 1967 | 25,195 | 1966 | 24,757 | 1965 | 24,337 | 1964 | 23,951 | 1963 | 23,600 | 1962 | 23,252 | 1961 | 22,897 | 1960 | 22,473 |
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