Year | Value | 2022 | 30,263,489 | 2021 | 30,727,326 | 2020 | 31,360,196 | 2019 | 31,815,879 | 2018 | 32,161,230 | 2017 | 32,406,511 | 2016 | 32,568,002 | 2015 | 32,678,847 | 2014 | 32,809,167 | 2013 | 32,954,005 | 2012 | 33,046,158 | 2011 | 33,018,678 | 2010 | 32,924,597 | 2009 | 32,734,833 | 2008 | 32,497,317 | 2007 | 32,235,013 | 2006 | 32,084,282 | 2005 | 32,115,118 | 2004 | 32,218,624 | 2003 | 32,295,508 | 2002 | 32,399,588 | 2001 | 32,530,607 | 2000 | 32,644,129 | 1999 | 32,775,196 | 1998 | 32,981,346 | 1997 | 33,256,667 | 1996 | 33,589,995 | 1995 | 33,941,693 | 1994 | 34,226,994 | 1993 | 34,380,127 | 1992 | 34,403,521 | 1991 | 34,365,925 | 1990 | 34,339,339 | 1989 | 34,326,954 | 1988 | 34,314,516 | 1987 | 34,391,253 | 1986 | 34,563,903 | 1985 | 34,804,008 | 1984 | 35,041,114 | 1983 | 35,191,990 | 1982 | 35,229,297 | 1981 | 35,206,286 | 1980 | 35,203,595 | 1979 | 35,312,790 | 1978 | 35,535,056 | 1977 | 35,874,568 | 1976 | 36,346,574 | 1975 | 36,846,652 | 1974 | 37,222,402 | 1973 | 37,496,407 | 1972 | 37,727,756 | 1971 | 37,771,303 | 1970 | 37,797,255 | 1969 | 38,130,934 | 1968 | 38,524,308 | 1967 | 38,874,927 | 1966 | 39,238,366 | 1965 | 39,477,060 | 1964 | 39,438,168 | 1963 | 39,279,246 | 1962 | 39,073,781 | 1961 | 38,812,599 | 1960 | 38,529,896 |
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