Year	Persons
1998-01-01	18061300
1999-01-01	18389800
2000-01-01	18710400
2001-01-01	19082500
2002-01-01	19319675
2003-01-01	19450550
2004-01-01	19574300
2005-01-01	19640975
2006-01-01	19765900
2007-01-01	19723875
2008-01-01	19990750
2009-01-01	19829500
2010-01-01	19729750
2011-01-01	19700025
2012-01-01	19924800
2013-01-01	19770975
2014-01-01	19706200
2015-01-01	19537125
2016-01-01	19539300
2017-01-01	19426650