Year	Persons
1999-01-01	17317675
2000-01-01	17903400
2001-01-01	17941650
2002-01-01	18855525
2003-01-01	19632150
2004-01-01	20263825
2005-01-01	20998300
2006-01-01	21630625
2007-01-01	22280925
2008-01-01	22908475
2009-01-01	23106700
2010-01-01	23209975
2011-01-01	23280450
2012-01-01	23281400
2013-01-01	23043375
2014-01-01	22813575
2015-01-01	22767125
2016-01-01	22656500
2017-01-01	22558000