Year | Value | 2022 | 35,616,514 | 2021 | 35,889,771 | 2020 | 35,934,486 | 2019 | 35,815,113 | 2018 | 35,777,102 | 2017 | 35,808,681 | 2016 | 35,915,954 | 2015 | 36,060,323 | 2014 | 36,201,530 | 2013 | 36,236,028 | 2012 | 36,187,782 | 2011 | 36,136,144 | 2010 | 36,141,467 | 2009 | 36,176,813 | 2008 | 36,342,793 | 2007 | 36,614,689 | 2006 | 37,080,501 | 2005 | 37,631,229 | 2004 | 38,063,989 | 2003 | 38,329,849 | 2002 | 38,475,762 | 2001 | 38,395,711 | 2000 | 38,335,482 | 1999 | 38,539,042 | 1998 | 38,870,350 | 1997 | 39,138,869 | 1996 | 39,400,292 | 1995 | 39,554,640 | 1994 | 39,424,204 | 1993 | 39,103,147 | 1992 | 38,684,422 | 1991 | 38,181,325 | 1990 | 37,632,924 | 1989 | 37,146,899 | 1988 | 36,641,559 | 1987 | 36,174,121 | 1986 | 35,936,126 | 1985 | 35,666,186 | 1984 | 35,306,099 | 1983 | 35,247,519 | 1982 | 35,410,342 | 1981 | 35,098,540 | 1980 | 34,081,286 | 1979 | 32,955,885 | 1978 | 31,816,599 | 1977 | 30,507,806 | 1976 | 29,458,030 | 1975 | 29,246,576 | 1974 | 29,280,087 | 1973 | 29,057,345 | 1972 | 28,848,078 | 1971 | 28,693,473 | 1970 | 28,375,941 | 1969 | 27,987,276 | 1968 | 27,542,430 | 1967 | 27,147,100 | 1966 | 26,852,060 | 1965 | 26,748,241 | 1964 | 26,892,903 | 1963 | 27,135,382 | 1962 | 27,340,271 | 1961 | 27,549,690 | 1960 | 27,685,348 |
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