Year	Persons
1998-01-01	19382484
1999-01-01	18968750
2000-01-01	19181906
2001-01-01	19257993
2002-01-01	19594188
2003-01-01	19763309
2004-01-01	20121433
2005-01-01	19959312
2006-01-01	20066651
2007-01-01	20348501
2008-01-01	20602241
2009-01-01	20878285
2010-01-01	19822633
2011-01-01	19772854
2012-01-01	19611275
2013-01-01	19438875
2014-01-01	19453155
2015-01-01	19489402
2016-01-01	19473767