Year | Value | 2022 | 36,205,289 | 2021 | 36,526,026 | 2020 | 36,765,972 | 2019 | 36,842,050 | 2018 | 36,857,661 | 2017 | 36,761,355 | 2016 | 36,636,311 | 2015 | 36,512,580 | 2014 | 36,546,822 | 2013 | 36,775,937 | 2012 | 37,144,056 | 2011 | 37,669,305 | 2010 | 38,280,638 | 2009 | 38,702,010 | 2008 | 38,971,599 | 2007 | 39,092,031 | 2006 | 38,983,393 | 2005 | 38,870,854 | 2004 | 39,032,689 | 2003 | 39,308,874 | 2002 | 39,522,231 | 2001 | 39,746,913 | 2000 | 39,905,651 | 1999 | 39,765,362 | 1998 | 39,464,977 | 1997 | 39,091,391 | 1996 | 38,640,694 | 1995 | 38,120,869 | 1994 | 37,593,403 | 1993 | 37,026,030 | 1992 | 36,461,762 | 1991 | 36,103,698 | 1990 | 35,705,015 | 1989 | 35,268,385 | 1988 | 35,150,583 | 1987 | 35,259,450 | 1986 | 34,928,189 | 1985 | 33,903,620 | 1984 | 32,760,398 | 1983 | 31,630,420 | 1982 | 30,332,945 | 1981 | 29,303,406 | 1980 | 29,091,508 | 1979 | 29,151,630 | 1978 | 28,968,161 | 1977 | 28,804,484 | 1976 | 28,693,415 | 1975 | 28,445,391 | 1974 | 28,045,706 | 1973 | 27,593,803 | 1972 | 27,180,792 | 1971 | 26,863,946 | 1970 | 26,700,402 | 1969 | 26,859,650 | 1968 | 27,109,220 | 1967 | 27,314,453 | 1966 | 27,505,240 | 1965 | 27,608,968 | 1964 | 27,553,691 | 1963 | 27,635,478 | 1962 | 27,727,206 | 1961 | 27,551,776 | 1960 | 27,386,966 |
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