Year | Value | 2022 | 52,705,764 | 2021 | 51,698,275 | 2020 | 50,607,408 | 2019 | 49,460,539 | 2018 | 48,319,071 | 2017 | 47,211,279 | 2016 | 46,119,071 | 2015 | 45,079,866 | 2014 | 44,120,341 | 2013 | 43,194,833 | 2012 | 42,289,821 | 2011 | 41,421,229 | 2010 | 40,569,540 | 2009 | 39,691,666 | 2008 | 38,786,688 | 2007 | 37,884,045 | 2006 | 36,971,211 | 2005 | 36,035,714 | 2004 | 35,089,259 | 2003 | 34,104,226 | 2002 | 33,048,040 | 2001 | 31,938,913 | 2000 | 30,813,841 | 1999 | 29,695,281 | 1998 | 28,462,606 | 1997 | 27,173,753 | 1996 | 25,992,310 | 1995 | 24,895,057 | 1994 | 23,864,484 | 1993 | 23,039,928 | 1992 | 22,403,052 | 1991 | 21,808,709 | 1990 | 21,285,791 | 1989 | 20,837,030 | 1988 | 20,469,498 | 1987 | 20,168,011 | 1986 | 19,878,117 | 1985 | 19,556,560 | 1984 | 19,199,649 | 1983 | 18,803,029 | 1982 | 18,370,017 | 1981 | 17,947,817 | 1980 | 17,548,227 | 1979 | 17,149,965 | 1978 | 16,747,822 | 1977 | 16,349,251 | 1976 | 15,970,772 | 1975 | 15,614,226 | 1974 | 15,269,757 | 1973 | 14,939,476 | 1972 | 14,627,041 | 1971 | 14,341,051 | 1970 | 14,070,337 | 1969 | 13,803,994 | 1968 | 13,552,271 | 1967 | 13,315,028 | 1966 | 13,086,009 | 1965 | 12,857,662 | 1964 | 12,625,622 | 1963 | 12,387,719 | 1962 | 12,148,728 | 1961 | 11,919,905 | 1960 | 11,705,781 |
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