Year | Value | 2022 | 48,131 | 2021 | 49,331 | 2020 | 49,968 | 2019 | 50,069 | 2018 | 49,495 | 2017 | 48,254 | 2016 | 46,761 | 2015 | 45,411 | 2014 | 44,527 | 2013 | 43,831 | 2012 | 42,923 | 2011 | 41,797 | 2010 | 40,366 | 2009 | 38,465 | 2008 | 36,448 | 2007 | 34,678 | 2006 | 32,987 | 2005 | 31,231 | 2004 | 29,472 | 2003 | 27,834 | 2002 | 26,319 | 2001 | 24,933 | 2000 | 23,699 | 1999 | 22,592 | 1998 | 21,625 | 1997 | 20,802 | 1996 | 20,099 | 1995 | 19,540 | 1994 | 19,152 | 1993 | 18,886 | 1992 | 18,692 | 1991 | 18,544 | 1990 | 18,427 | 1989 | 18,310 | 1988 | 18,192 | 1987 | 18,099 | 1986 | 18,035 | 1985 | 17,978 | 1984 | 17,899 | 1983 | 17,781 | 1982 | 17,627 | 1981 | 17,452 | 1980 | 17,258 | 1979 | 17,046 | 1978 | 16,819 | 1977 | 16,583 | 1976 | 16,310 | 1975 | 15,997 | 1974 | 15,687 | 1973 | 15,411 | 1972 | 15,149 | 1971 | 14,891 | 1970 | 14,655 | 1969 | 14,486 | 1968 | 14,358 | 1967 | 14,209 | 1966 | 14,033 | 1965 | 13,812 | 1964 | 13,505 | 1963 | 13,104 | 1962 | 12,632 | 1961 | 12,100 | 1960 | 11,613 |
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