Year	Persons
1999-01-01	19337825
2000-01-01	19545125
2001-01-01	19824675
2002-01-01	20225350
2003-01-01	20619575
2004-01-01	20976075
2005-01-01	21393550
2006-01-01	21752875
2007-01-01	22198450
2008-01-01	22574575
2009-01-01	22749000
2010-01-01	22818875
2011-01-01	22875550
2012-01-01	22853375
2013-01-01	22728450
2014-01-01	22628150