Year | Value | 2022 | 22,731,816 | 2021 | 22,521,433 | 2020 | 22,261,407 | 2019 | 21,958,378 | 2018 | 21,611,787 | 2017 | 21,235,431 | 2016 | 20,860,239 | 2015 | 20,490,830 | 2014 | 20,121,267 | 2013 | 19,765,858 | 2012 | 19,432,365 | 2011 | 19,110,263 | 2010 | 18,796,301 | 2009 | 18,503,325 | 2008 | 18,203,592 | 2007 | 17,918,570 | 2006 | 17,663,727 | 2005 | 17,442,090 | 2004 | 17,247,625 | 2003 | 17,058,288 | 2002 | 16,842,918 | 2001 | 16,579,213 | 2000 | 16,259,522 | 1999 | 15,884,338 | 1998 | 15,468,597 | 1997 | 15,031,210 | 1996 | 14,587,241 | 1995 | 14,148,367 | 1994 | 13,719,792 | 1993 | 13,299,242 | 1992 | 12,887,486 | 1991 | 12,490,105 | 1990 | 12,103,533 | 1989 | 11,720,712 | 1988 | 11,325,099 | 1987 | 10,910,415 | 1986 | 10,489,532 | 1985 | 10,068,488 | 1984 | 9,663,956 | 1983 | 9,303,595 | 1982 | 8,995,889 | 1981 | 8,731,732 | 1980 | 8,498,484 | 1979 | 8,280,359 | 1978 | 8,069,904 | 1977 | 7,862,954 | 1976 | 7,657,146 | 1975 | 7,458,811 | 1974 | 7,276,373 | 1973 | 7,117,619 | 1972 | 6,985,825 | 1971 | 6,870,548 | 1970 | 6,766,077 | 1969 | 6,666,392 | 1968 | 6,559,962 | 1967 | 6,441,320 | 1966 | 6,308,851 | 1965 | 6,164,305 | 1964 | 6,009,477 | 1963 | 5,844,969 | 1962 | 5,672,107 | 1961 | 5,494,022 | 1960 | 5,313,711 |
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