Year | Value | 2022 | 29,870,140 | 2021 | 29,902,128 | 2020 | 29,995,373 | 2019 | 30,056,167 | 2018 | 30,137,165 | 2017 | 30,242,841 | 2016 | 30,372,961 | 2015 | 30,448,818 | 2014 | 30,567,539 | 2013 | 30,799,518 | 2012 | 31,131,812 | 2011 | 31,543,507 | 2010 | 32,019,551 | 2009 | 32,388,683 | 2008 | 32,645,010 | 2007 | 32,743,929 | 2006 | 32,729,900 | 2005 | 32,670,745 | 2004 | 32,609,552 | 2003 | 32,574,916 | 2002 | 32,596,266 | 2001 | 32,692,920 | 2000 | 32,874,160 | 1999 | 33,038,675 | 1998 | 33,114,283 | 1997 | 33,099,750 | 1996 | 33,036,393 | 1995 | 32,994,633 | 1994 | 33,111,702 | 1993 | 33,421,307 | 1992 | 33,891,271 | 1991 | 34,529,365 | 1990 | 35,166,387 | 1989 | 35,644,959 | 1988 | 35,974,604 | 1987 | 36,232,900 | 1986 | 36,287,151 | 1985 | 36,338,884 | 1984 | 36,659,585 | 1983 | 37,087,255 | 1982 | 37,452,836 | 1981 | 37,815,161 | 1980 | 38,031,326 | 1979 | 37,948,105 | 1978 | 37,705,151 | 1977 | 37,403,705 | 1976 | 37,040,660 | 1975 | 36,630,368 | 1974 | 36,200,952 | 1973 | 35,767,849 | 1972 | 35,361,461 | 1971 | 35,167,876 | 1970 | 34,850,979 | 1969 | 34,499,662 | 1968 | 34,437,322 | 1967 | 34,575,805 | 1966 | 34,275,481 | 1965 | 33,322,185 | 1964 | 32,268,407 | 1963 | 31,204,693 | 1962 | 29,995,269 | 1961 | 29,028,608 | 1960 | 28,858,226 |
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