Year Persons 1960-01-01 11833000 1961-01-01 11974000 1988-01-01 7170000 1989-01-01 7015000 1990-01-01 7223000 1991-01-01 7324000 1992-01-01 7730000 1993-01-01 7806000 1994-01-01 8192000 1995-01-01 8552000 1996-01-01 9077000 1997-01-01 9467000 1998-01-01 9713000 1999-01-01 9927000 2000-01-01 10397750 2001-01-01 10146000 2002-01-01 10607500 2003-01-01 10664000 2004-01-01 10980750 2005-01-01 11386000 2006-01-01 12031900 2007-01-01 12541325 2008-01-01 12921650 2009-01-01 12763175 2010-01-01 13754725 2011-01-01 14867000 2012-01-01 15612900 2013-01-01 16345150 2014-01-01 17121700 2015-01-01 17860000 2016-01-01 18374075 2017-01-01 18957800