Year Number of People 1960 4802582 1961 5060452 1962 5330609 1963 5613369 1964 5908497 1965 6216993 1966 6538935 1967 6874013 1968 7221218 1969 7578084 1970 7943534 1971 8183628 1972 8423010 1973 8662886 1974 8905602 1975 9152354 1976 9403764 1977 9659708 1978 9922435 1979 10195285 1980 10465078 1981 10741161 1982 11028833 1983 11326210 1984 11631159 1985 11941868 1986 12257689 1987 12576950 1988 12900764 1989 13278715 1990 13817220 1991 14372410 1992 14941662 1993 15518499 1994 16096447 1995 16668605 1996 17231977 1997 17787158 1998 18335227 1999 18908644 2000 19568803 2001 20233862 2002 20907922 2003 21590520 2004 22287690 2005 23000295 2006 23731187 2007 24481969 2008 25256248 2009 26061216 2010 26910684 2011 27796909 2012 28720281 2013 29671797 2014 30646249 2015 31635611 2016 32635787 2017 33642782