Year | Value | 2022 | 20,118,198 | 2021 | 20,357,400 | 2020 | 20,802,442 | 2019 | 21,150,205 | 2018 | 21,298,460 | 2017 | 21,413,168 | 2016 | 21,443,722 | 2015 | 21,416,466 | 2014 | 21,448,786 | 2013 | 21,483,131 | 2012 | 21,409,736 | 2011 | 21,229,853 | 2010 | 20,922,707 | 2009 | 20,350,660 | 2008 | 19,528,654 | 2007 | 18,614,726 | 2006 | 17,728,789 | 2005 | 16,973,955 | 2004 | 16,351,140 | 2003 | 15,760,711 | 2002 | 15,186,055 | 2001 | 14,628,763 | 2000 | 14,076,915 | 1999 | 13,591,637 | 1998 | 13,167,205 | 1997 | 12,781,516 | 1996 | 12,425,708 | 1995 | 12,082,912 | 1994 | 11,723,622 | 1993 | 11,409,481 | 1992 | 11,128,413 | 1991 | 10,788,289 | 1990 | 10,402,567 | 1989 | 9,975,081 | 1988 | 9,654,445 | 1987 | 9,335,119 | 1986 | 9,030,464 | 1985 | 8,733,331 | 1984 | 8,430,675 | 1983 | 8,139,555 | 1982 | 7,863,284 | 1981 | 7,510,363 | 1980 | 7,137,142 | 1979 | 6,836,994 | 1978 | 6,547,780 | 1977 | 6,253,810 | 1976 | 5,955,530 | 1975 | 5,662,888 | 1974 | 5,363,142 | 1973 | 5,076,631 | 1972 | 4,824,772 | 1971 | 4,607,994 | 1970 | 4,433,621 | 1969 | 4,304,669 | 1968 | 4,220,288 | 1967 | 4,171,829 | 1966 | 4,142,144 | 1965 | 4,115,456 | 1964 | 4,083,908 | 1963 | 4,049,575 | 1962 | 4,010,198 | 1961 | 3,964,545 | 1960 | 3,918,871 |
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