Year | Value | 2022 | 27,216,740 | 2021 | 27,015,414 | 2020 | 26,817,022 | 2019 | 26,616,900 | 2018 | 26,421,724 | 2017 | 26,225,112 | 2016 | 26,019,857 | 2015 | 25,808,518 | 2014 | 25,595,912 | 2013 | 25,377,710 | 2012 | 25,156,858 | 2011 | 24,939,195 | 2010 | 24,732,646 | 2009 | 24,541,072 | 2008 | 24,402,770 | 2007 | 24,266,155 | 2006 | 24,084,184 | 2005 | 23,897,578 | 2004 | 23,698,591 | 2003 | 23,484,720 | 2002 | 23,255,648 | 2001 | 23,015,840 | 2000 | 22,770,251 | 1999 | 22,514,453 | 1998 | 22,243,440 | 1997 | 21,963,537 | 1996 | 21,682,342 | 1995 | 21,405,344 | 1994 | 21,129,504 | 1993 | 20,851,342 | 1992 | 20,573,799 | 1991 | 20,293,704 | 1990 | 20,002,052 | 1989 | 19,696,193 | 1988 | 19,384,587 | 1987 | 19,066,337 | 1986 | 18,735,306 | 1985 | 18,389,794 | 1984 | 18,029,998 | 1983 | 17,663,097 | 1982 | 17,323,285 | 1981 | 17,008,344 | 1980 | 16,687,443 | 1979 | 16,366,075 | 1978 | 16,049,039 | 1977 | 15,734,570 | 1976 | 15,428,959 | 1975 | 15,132,124 | 1974 | 14,837,418 | 1973 | 14,544,783 | 1972 | 14,239,404 | 1971 | 13,922,477 | 1970 | 13,608,010 | 1969 | 13,296,558 | 1968 | 12,989,573 | 1967 | 12,688,526 | 1966 | 12,397,493 | 1965 | 12,114,894 | 1964 | 11,841,452 | 1963 | 11,579,608 | 1962 | 11,326,077 | 1961 | 11,079,514 | 1960 | 10,840,150 |
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