Year | Value | 2022 | 39,081,746 | 2021 | 38,376,013 | 2020 | 37,665,836 | 2019 | 36,871,355 | 2018 | 36,034,572 | 2017 | 35,193,829 | 2016 | 34,351,242 | 2015 | 33,502,046 | 2014 | 32,646,087 | 2013 | 31,756,065 | 2012 | 30,800,274 | 2011 | 29,776,803 | 2010 | 28,706,666 | 2009 | 27,619,103 | 2008 | 26,411,220 | 2007 | 25,141,338 | 2006 | 23,962,285 | 2005 | 22,859,207 | 2004 | 21,835,416 | 2003 | 21,025,903 | 2002 | 20,399,189 | 2001 | 19,820,628 | 2000 | 19,326,720 | 1999 | 18,911,151 | 1998 | 18,569,088 | 1997 | 18,283,002 | 1996 | 18,003,564 | 1995 | 17,695,247 | 1994 | 17,350,088 | 1993 | 16,961,154 | 1992 | 16,536,712 | 1991 | 16,116,841 | 1990 | 15,719,958 | 1989 | 15,326,081 | 1988 | 14,921,270 | 1987 | 14,518,547 | 1986 | 14,128,664 | 1985 | 13,752,845 | 1984 | 13,390,619 | 1983 | 13,047,283 | 1982 | 12,727,758 | 1981 | 12,435,998 | 1980 | 12,163,108 | 1979 | 11,902,002 | 1978 | 11,657,538 | 1977 | 11,425,262 | 1976 | 11,200,757 | 1975 | 10,978,883 | 1974 | 10,757,556 | 1973 | 10,536,918 | 1972 | 10,320,257 | 1971 | 10,126,699 | 1970 | 9,950,945 | 1969 | 9,777,963 | 1968 | 9,617,346 | 1967 | 9,462,557 | 1966 | 9,284,047 | 1965 | 9,062,542 | 1964 | 8,797,639 | 1963 | 8,484,613 | 1962 | 8,150,075 | 1961 | 7,852,230 | 1960 | 7,627,086 |
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