Year | Value | 2022 | 45,946,414 | 2021 | 46,095,988 | 2020 | 46,419,047 | 2019 | 46,501,299 | 2018 | 46,499,734 | 2017 | 46,353,183 | 2016 | 46,064,544 | 2015 | 45,738,227 | 2014 | 45,464,696 | 2013 | 45,240,323 | 2012 | 45,117,116 | 2011 | 45,095,563 | 2010 | 45,177,225 | 2009 | 45,239,616 | 2008 | 45,222,879 | 2007 | 45,030,043 | 2006 | 44,771,117 | 2005 | 44,502,281 | 2004 | 44,325,045 | 2003 | 44,306,640 | 2002 | 44,472,082 | 2001 | 44,832,143 | 2000 | 45,258,893 | 1999 | 45,568,550 | 1998 | 45,775,243 | 1997 | 45,875,009 | 1996 | 45,689,321 | 1995 | 45,499,998 | 1994 | 45,533,619 | 1993 | 45,548,690 | 1992 | 45,432,079 | 1991 | 45,343,222 | 1990 | 45,167,106 | 1989 | 44,801,560 | 1988 | 44,372,197 | 1987 | 43,937,553 | 1986 | 43,445,812 | 1985 | 42,907,075 | 1984 | 42,359,640 | 1983 | 41,784,603 | 1982 | 41,135,126 | 1981 | 40,685,468 | 1980 | 40,203,237 | 1979 | 39,628,939 | 1978 | 39,347,887 | 1977 | 39,275,232 | 1976 | 38,822,189 | 1975 | 37,729,620 | 1974 | 36,461,941 | 1973 | 35,177,612 | 1972 | 33,758,085 | 1971 | 32,454,233 | 1970 | 31,855,971 | 1969 | 31,637,576 | 1968 | 31,137,045 | 1967 | 30,650,442 | 1966 | 30,359,004 | 1965 | 30,031,925 | 1964 | 29,601,947 | 1963 | 29,278,508 | 1962 | 29,036,005 | 1961 | 28,840,387 | 1960 | 28,832,051 |
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