Year | Value | 2022 | 71,392,299 | 2021 | 69,623,686 | 2020 | 69,012,762 | 2019 | 69,553,112 | 2018 | 71,496,823 | 2017 | 74,316,909 | 2016 | 77,184,064 | 2015 | 80,054,585 | 2014 | 82,347,617 | 2013 | 83,616,107 | 2012 | 83,537,492 | 2011 | 82,506,136 | 2010 | 81,429,393 | 2009 | 80,320,724 | 2008 | 79,832,399 | 2007 | 79,363,399 | 2006 | 76,008,531 | 2005 | 70,279,883 | 2004 | 64,671,848 | 2003 | 59,259,917 | 2002 | 55,918,411 | 2001 | 56,180,677 | 2000 | 58,089,195 | 1999 | 59,835,430 | 1998 | 60,354,541 | 1997 | 59,398,553 | 1996 | 57,840,898 | 1995 | 55,926,251 | 1994 | 53,412,619 | 1993 | 50,549,238 | 1992 | 47,308,185 | 1991 | 44,149,296 | 1990 | 41,351,319 | 1989 | 38,754,469 | 1988 | 36,661,541 | 1987 | 35,006,549 | 1986 | 33,837,562 | 1985 | 33,013,137 | 1984 | 32,393,722 | 1983 | 31,973,409 | 1982 | 31,731,396 | 1981 | 31,512,556 | 1980 | 31,394,306 | 1979 | 31,421,049 | 1978 | 31,412,079 | 1977 | 31,166,538 | 1976 | 30,647,542 | 1975 | 29,982,447 | 1974 | 29,261,323 | 1973 | 28,487,946 | 1972 | 27,753,973 | 1971 | 27,067,236 | 1970 | 26,410,546 | 1969 | 25,887,370 | 1968 | 25,356,880 | 1967 | 24,750,467 | 1966 | 24,263,647 | 1965 | 23,800,350 | 1964 | 23,287,000 | 1963 | 22,820,109 | 1962 | 22,460,291 | 1961 | 22,261,773 | 1960 | 22,209,645 |
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