Year	Thousands of Persons
2003-01-01	13.0
2004-01-01	13.0
2005-01-01	13.3
2006-01-01	13.2
2007-01-01	13.3
2008-01-01	13.2
2009-01-01	12.5
2010-01-01	12.2
2011-01-01	12.2
2012-01-01	12.2
2013-01-01	12.2
2014-01-01	12.0
2015-01-01	11.8
2016-01-01	11.6
2017-01-01	11.4