Year	Persons
2000-01-01	18722875
2001-01-01	18850300
2002-01-01	18997550
2003-01-01	19127850
2004-01-01	19273025
2005-01-01	19450525
2006-01-01	19659150
2007-01-01	19827550
2008-01-01	19969275
2009-01-01	20083025
2010-01-01	20192000
2011-01-01	20307500
2012-01-01	20309975
2013-01-01	20322125
2014-01-01	20391275
2015-01-01	20493625
2016-01-01	20581325
2017-01-01	20656425