Year	Persons
2000-01-01	17696575
2001-01-01	17911650
2002-01-01	17986725
2003-01-01	18076200
2004-01-01	18207875
2005-01-01	18280150
2006-01-01	18261375
2007-01-01	18512675
2008-01-01	18556650
2009-01-01	18806700
2010-01-01	19071225
2011-01-01	19246975
2012-01-01	19298400
2013-01-01	19343700
2014-01-01	19454975
2015-01-01	19560000
2016-01-01	19581400
2017-01-01	19722300