Year Persons 1960-01-01 17909009 1961-01-01 18271000 1962-01-01 18614000 1963-01-01 18964000 1964-01-01 19325000 1965-01-01 19678000 1966-01-01 20048000 1967-01-01 20412000 1968-01-01 20744000 1969-01-01 21028000 1970-01-01 21324000 1971-01-01 21645535 1972-01-01 21993631 1973-01-01 22369408 1974-01-01 22774087 1975-01-01 23209000 1976-01-01 23518000 1977-01-01 23796000 1978-01-01 24036000 1979-01-01 24277000 1980-01-01 24593000 1981-01-01 24900000 1982-01-01 25202000 1983-01-01 25456000 1984-01-01 25702000 1985-01-01 25942000 1986-01-01 26204000 1987-01-01 26550000 1988-01-01 26895000 1989-01-01 27379000 1990-01-01 27791000 1991-01-01 28171682 1992-01-01 28519597 1993-01-01 28833410 1994-01-01 29111906 1995-01-01 29354000 1996-01-01 29671900 1997-01-01 29987200 1998-01-01 30247900 1999-01-01 30499200 2000-01-01 30769700 2001-01-01 31081900 2002-01-01 31362000 2003-01-01 31676000 2004-01-01 31995000 2005-01-01 32312000 2006-01-01 32570505 2007-01-01 32887928 2008-01-01 33245773 2009-01-01 33628571 2010-01-01 34005274 2011-01-01 34342780 2012-01-01 34750545 2013-01-01 35152370 2014-01-01 35535348 2015-01-01 35832513 2016-01-01 36264604 2017-01-01 36708083