Year | Value | 2022 | 47,303,571 | 2021 | 47,486,275 | 2020 | 49,216,549 | 2019 | 50,795,502 | 2018 | 51,313,537 | 2017 | 50,547,022 | 2016 | 49,261,809 | 2015 | 47,639,910 | 2014 | 45,504,881 | 2013 | 43,148,111 | 2012 | 40,521,945 | 2011 | 37,949,645 | 2010 | 35,626,101 | 2009 | 33,442,400 | 2008 | 31,655,284 | 2007 | 30,144,375 | 2006 | 29,047,185 | 2005 | 28,360,169 | 2004 | 27,868,161 | 2003 | 27,551,997 | 2002 | 27,397,741 | 2001 | 27,161,480 | 2000 | 26,850,277 | 1999 | 26,603,143 | 1998 | 26,343,276 | 1997 | 25,868,706 | 1996 | 25,186,037 | 1995 | 24,472,066 | 1994 | 23,735,237 | 1993 | 22,918,597 | 1992 | 22,160,132 | 1991 | 21,478,490 | 1990 | 20,840,909 | 1989 | 20,301,884 | 1988 | 19,728,282 | 1987 | 19,082,841 | 1986 | 18,546,462 | 1985 | 18,027,830 | 1984 | 17,401,695 | 1983 | 16,775,215 | 1982 | 16,267,403 | 1981 | 15,838,384 | 1980 | 15,442,487 | 1979 | 15,154,290 | 1978 | 14,964,490 | 1977 | 14,701,878 | 1976 | 14,336,574 | 1975 | 13,944,821 | 1974 | 13,526,748 | 1973 | 13,083,973 | 1972 | 12,699,962 | 1971 | 12,409,657 | 1970 | 12,148,231 | 1969 | 11,879,601 | 1968 | 11,652,665 | 1967 | 11,476,652 | 1966 | 11,275,010 | 1965 | 11,021,614 | 1964 | 10,737,964 | 1963 | 10,434,516 | 1962 | 10,145,141 | 1961 | 9,961,143 | 1960 | 9,977,206 |
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