Year	Persons
1999-01-01	17215175
2000-01-01	17592975
2001-01-01	18030800
2002-01-01	18620875
2003-01-01	19147475
2004-01-01	19621325
2005-01-01	20164825
2006-01-01	20619250
2007-01-01	21124750
2008-01-01	21507000
2009-01-01	21666625
2010-01-01	21689300
2011-01-01	21653100
2012-01-01	21495775
2013-01-01	21178825
2014-01-01	20868525
2015-01-01	20636375
2016-01-01	20381500
2017-01-01	20208050