Year | Value | 2022 | 33,426,026 | 2021 | 32,503,359 | 2020 | 31,611,167 | 2019 | 30,737,607 | 2018 | 29,910,019 | 2017 | 29,106,691 | 2016 | 28,293,575 | 2015 | 27,476,118 | 2014 | 26,657,340 | 2013 | 25,820,298 | 2012 | 24,980,743 | 2011 | 24,147,828 | 2010 | 23,336,950 | 2009 | 22,559,689 | 2008 | 21,786,387 | 2007 | 21,087,804 | 2006 | 20,462,681 | 2005 | 19,811,038 | 2004 | 19,166,277 | 2003 | 18,558,848 | 2002 | 17,955,750 | 2001 | 17,378,761 | 2000 | 16,860,084 | 1999 | 16,367,003 | 1998 | 15,888,787 | 1997 | 15,458,258 | 1996 | 15,088,314 | 1995 | 14,702,936 | 1994 | 14,184,987 | 1993 | 13,642,214 | 1992 | 13,175,871 | 1991 | 12,785,054 | 1990 | 12,474,901 | 1989 | 12,170,774 | 1988 | 11,879,202 | 1987 | 11,598,055 | 1986 | 11,283,533 | 1985 | 10,947,218 | 1984 | 10,580,788 | 1983 | 10,220,249 | 1982 | 9,916,052 | 1981 | 9,684,879 | 1980 | 9,494,368 | 1979 | 9,298,587 | 1978 | 9,084,454 | 1977 | 8,853,683 | 1976 | 8,639,018 | 1975 | 8,430,716 | 1974 | 8,227,613 | 1973 | 8,048,964 | 1972 | 7,899,488 | 1971 | 7,760,481 | 1970 | 7,612,728 | 1969 | 7,459,591 | 1968 | 7,304,497 | 1967 | 7,145,401 | 1966 | 6,988,797 | 1965 | 6,839,357 | 1964 | 6,693,632 | 1963 | 6,548,758 | 1962 | 6,405,600 | 1961 | 6,264,372 | 1960 | 6,127,862 |
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