Year | Value | 2022 | 34,648 | 2021 | 35,245 | 2020 | 35,533 | 2019 | 35,517 | 2018 | 35,265 | 2017 | 34,899 | 2016 | 34,594 | 2015 | 34,551 | 2014 | 34,877 | 2013 | 35,523 | 2012 | 36,358 | 2011 | 37,210 | 2010 | 38,001 | 2009 | 38,722 | 2008 | 39,232 | 2007 | 39,360 | 2006 | 39,105 | 2005 | 38,336 | 2004 | 36,921 | 2003 | 35,297 | 2002 | 33,865 | 2001 | 32,603 | 2000 | 31,478 | 1999 | 30,465 | 1998 | 29,550 | 1997 | 28,733 | 1996 | 27,957 | 1995 | 27,152 | 1994 | 26,535 | 1993 | 26,223 | 1992 | 27,179 | 1991 | 27,980 | 1990 | 27,282 | 1989 | 26,378 | 1988 | 25,451 | 1987 | 24,540 | 1986 | 23,648 | 1985 | 22,778 | 1984 | 21,926 | 1983 | 21,095 | 1982 | 20,289 | 1981 | 19,508 | 1980 | 18,757 | 1979 | 18,038 | 1978 | 17,353 | 1977 | 16,711 | 1976 | 16,110 | 1975 | 15,543 | 1974 | 15,008 | 1973 | 14,499 | 1972 | 14,012 | 1971 | 13,546 | 1970 | 13,102 | 1969 | 12,790 | 1968 | 12,596 | 1967 | 12,509 | 1966 | 12,542 | 1965 | 12,588 | 1964 | 12,516 | 1963 | 12,331 | 1962 | 12,050 | 1961 | 11,665 | 1960 | 11,298 |
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