Year | Value | 2022 | 45,268,407 | 2021 | 45,548,400 | 2020 | 45,964,618 | 2019 | 46,122,991 | 2018 | 46,225,238 | 2017 | 46,213,291 | 2016 | 45,925,184 | 2015 | 45,586,511 | 2014 | 45,483,024 | 2013 | 45,402,109 | 2012 | 45,235,509 | 2011 | 45,136,351 | 2010 | 45,038,507 | 2009 | 44,606,915 | 2008 | 44,034,759 | 2007 | 43,449,621 | 2006 | 42,854,921 | 2005 | 42,197,278 | 2004 | 41,520,175 | 2003 | 40,848,402 | 2002 | 40,153,284 | 2001 | 39,634,120 | 2000 | 39,093,725 | 1999 | 38,486,478 | 1998 | 38,155,207 | 1997 | 38,035,740 | 1996 | 37,529,911 | 1995 | 36,365,080 | 1994 | 35,027,412 | 1993 | 33,702,859 | 1992 | 32,281,791 | 1991 | 30,993,724 | 1990 | 30,469,564 | 1989 | 30,314,724 | 1988 | 29,864,342 | 1987 | 29,390,751 | 1986 | 29,106,732 | 1985 | 28,796,892 | 1984 | 28,411,111 | 1983 | 28,148,326 | 1982 | 27,957,957 | 1981 | 27,810,429 | 1980 | 27,801,881 | 1979 | 27,980,722 | 1978 | 28,062,746 | 1977 | 27,970,509 | 1976 | 27,768,616 | 1975 | 27,320,560 | 1974 | 26,615,952 | 1973 | 26,066,903 | 1972 | 25,667,648 | 1971 | 25,184,873 | 1970 | 24,825,330 | 1969 | 24,446,111 | 1968 | 23,426,666 | 1967 | 22,125,452 | 1966 | 21,089,586 | 1965 | 20,244,584 | 1964 | 19,931,267 | 1963 | 20,399,884 | 1962 | 21,236,571 | 1961 | 21,997,980 | 1960 | 22,533,744 |
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