Year | Value | 2022 | 33,560,796 | 2021 | 33,144,885 | 2020 | 32,480,126 | 2019 | 31,830,512 | 2018 | 31,233,370 | 2017 | 30,629,964 | 2016 | 29,962,313 | 2015 | 29,282,639 | 2014 | 28,602,340 | 2013 | 27,872,193 | 2012 | 27,102,557 | 2011 | 26,332,958 | 2010 | 25,554,494 | 2009 | 24,759,874 | 2008 | 23,992,329 | 2007 | 23,290,414 | 2006 | 22,620,825 | 2005 | 21,946,615 | 2004 | 21,299,092 | 2003 | 20,683,557 | 2002 | 20,074,574 | 2001 | 19,493,182 | 2000 | 18,974,804 | 1999 | 18,506,002 | 1998 | 18,084,982 | 1997 | 17,710,738 | 1996 | 17,371,089 | 1995 | 17,021,673 | 1994 | 16,567,753 | 1993 | 16,092,895 | 1992 | 15,648,417 | 1991 | 15,212,389 | 1990 | 14,830,098 | 1989 | 14,425,170 | 1988 | 14,094,607 | 1987 | 13,792,308 | 1986 | 13,494,440 | 1985 | 13,188,152 | 1984 | 12,856,533 | 1983 | 12,501,062 | 1982 | 12,152,398 | 1981 | 11,837,634 | 1980 | 11,494,269 | 1979 | 11,126,542 | 1978 | 10,817,327 | 1977 | 10,541,256 | 1976 | 10,314,808 | 1975 | 10,195,206 | 1974 | 10,153,218 | 1973 | 10,163,699 | 1972 | 10,218,714 | 1971 | 10,190,405 | 1970 | 10,042,983 | 1969 | 9,804,609 | 1968 | 9,478,704 | 1967 | 9,136,086 | 1966 | 8,858,275 | 1965 | 8,699,149 | 1964 | 8,628,437 | 1963 | 8,616,902 | 1962 | 8,596,088 | 1961 | 8,511,189 | 1960 | 8,347,458 |
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