Year | Value | 2022 | 25,873,267 | 2021 | 25,186,344 | 2020 | 24,403,716 | 2019 | 23,482,143 | 2018 | 22,409,668 | 2017 | 21,271,924 | 2016 | 20,203,415 | 2015 | 19,198,494 | 2014 | 18,262,959 | 2013 | 17,522,029 | 2012 | 16,958,095 | 2011 | 16,444,843 | 2010 | 15,996,373 | 2009 | 15,612,806 | 2008 | 15,291,252 | 2007 | 15,011,001 | 2006 | 14,728,388 | 2005 | 14,415,425 | 2004 | 14,073,905 | 2003 | 13,699,475 | 2002 | 13,296,693 | 2001 | 12,902,615 | 2000 | 12,535,645 | 1999 | 12,177,399 | 1998 | 11,816,252 | 1997 | 11,462,546 | 1996 | 11,122,743 | 1995 | 10,795,700 | 1994 | 10,478,271 | 1993 | 10,171,577 | 1992 | 9,877,360 | 1991 | 9,600,554 | 1990 | 9,343,607 | 1989 | 9,102,880 | 1988 | 8,876,969 | 1987 | 8,664,268 | 1986 | 8,460,272 | 1985 | 8,260,494 | 1984 | 8,063,706 | 1983 | 7,870,080 | 1982 | 7,682,162 | 1981 | 7,508,423 | 1980 | 7,347,103 | 1979 | 7,191,421 | 1978 | 7,045,356 | 1977 | 6,901,611 | 1976 | 6,740,381 | 1975 | 6,551,664 | 1974 | 6,339,718 | 1973 | 6,101,484 | 1972 | 5,851,811 | 1971 | 5,642,212 | 1970 | 5,488,225 | 1969 | 5,374,650 | 1968 | 5,313,136 | 1967 | 5,288,188 | 1966 | 5,239,948 | 1965 | 5,125,958 | 1964 | 4,944,487 | 1963 | 4,693,343 | 1962 | 4,401,930 | 1961 | 4,152,140 | 1960 | 3,991,220 |
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