Year	Persons
2005-01-01	20800000
2006-01-01	21146000
2007-01-01	21052000
2008-01-01	20560000
2009-01-01	18687000
2010-01-01	18189000
2011-01-01	18492000
2012-01-01	18503000
2013-01-01	18513000
2014-01-01	18765000
2015-01-01	18921000
2016-01-01	19271000