Year | Value | 2022 | 17,192,503 | 2021 | 17,020,361 | 2020 | 16,805,323 | 2019 | 16,556,679 | 2018 | 16,242,003 | 2017 | 15,939,422 | 2016 | 15,704,688 | 2015 | 15,496,198 | 2014 | 15,312,249 | 2013 | 15,143,939 | 2012 | 14,984,154 | 2011 | 14,829,974 | 2010 | 14,684,090 | 2009 | 14,548,239 | 2008 | 14,418,159 | 2007 | 14,303,686 | 2006 | 14,200,318 | 2005 | 14,089,681 | 2004 | 13,968,835 | 2003 | 13,838,734 | 2002 | 13,698,746 | 2001 | 13,542,313 | 2000 | 13,364,073 | 1999 | 13,163,636 | 1998 | 12,946,269 | 1997 | 12,719,037 | 1996 | 12,489,256 | 1995 | 12,259,703 | 1994 | 12,026,724 | 1993 | 11,790,876 | 1992 | 11,554,978 | 1991 | 11,320,245 | 1990 | 11,080,623 | 1989 | 10,835,065 | 1988 | 10,591,417 | 1987 | 10,351,781 | 1986 | 10,116,701 | 1985 | 9,881,918 | 1984 | 9,646,870 | 1983 | 9,413,010 | 1982 | 9,183,415 | 1981 | 8,959,985 | 1980 | 8,738,285 | 1979 | 8,518,709 | 1978 | 8,303,841 | 1977 | 8,092,533 | 1976 | 7,888,148 | 1975 | 7,689,308 | 1974 | 7,491,724 | 1973 | 7,295,842 | 1972 | 7,102,792 | 1971 | 6,913,176 | 1970 | 6,740,704 | 1969 | 6,568,876 | 1968 | 6,384,793 | 1967 | 6,205,155 | 1966 | 6,029,533 | 1965 | 5,857,453 | 1964 | 5,688,855 | 1963 | 5,525,023 | 1962 | 5,365,633 | 1961 | 5,209,586 | 1960 | 5,057,666 |
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