Year | Value | 2022 | 35,331,403 | 2021 | 39,330,381 | 2020 | 42,672,144 | 2019 | 45,151,398 | 2018 | 46,998,375 | 2017 | 47,999,545 | 2016 | 48,139,784 | 2015 | 48,195,638 | 2014 | 48,203,187 | 2013 | 47,938,239 | 2012 | 47,305,718 | 2011 | 46,538,081 | 2010 | 45,975,660 | 2009 | 45,247,032 | 2008 | 44,418,408 | 2007 | 43,726,038 | 2006 | 43,299,552 | 2005 | 43,283,734 | 2004 | 43,416,755 | 2003 | 43,548,082 | 2002 | 43,912,190 | 2001 | 44,475,195 | 2000 | 45,085,715 | 1999 | 45,939,696 | 1998 | 47,182,888 | 1997 | 48,601,641 | 1996 | 50,360,753 | 1995 | 53,545,407 | 1994 | 57,498,773 | 1993 | 60,683,358 | 1992 | 63,590,653 | 1991 | 65,825,164 | 1990 | 65,582,551 | 1989 | 63,545,887 | 1988 | 61,327,161 | 1987 | 59,384,289 | 1986 | 57,753,166 | 1985 | 56,309,847 | 1984 | 55,260,387 | 1983 | 54,354,534 | 1982 | 52,774,458 | 1981 | 51,362,284 | 1980 | 51,297,497 | 1979 | 52,481,063 | 1978 | 55,096,056 | 1977 | 58,604,091 | 1976 | 62,225,216 | 1975 | 65,846,880 | 1974 | 68,810,025 | 1973 | 70,638,507 | 1972 | 70,992,930 | 1971 | 70,315,196 | 1970 | 69,474,453 | 1969 | 68,611,056 | 1968 | 68,473,801 | 1967 | 68,392,498 | 1966 | 65,123,939 | 1965 | 59,171,953 | 1964 | 53,617,495 | 1963 | 48,318,257 | 1962 | 45,083,106 | 1961 | 46,656,529 | 1960 | 51,494,340 |
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