Year	Thousands of Persons
2001-01-01	60.5
2002-01-01	54.6
2003-01-01	52.4
2004-01-01	54.6
2005-01-01	53.8
2006-01-01	50.6
2007-01-01	47.9
2008-01-01	46.6
2009-01-01	42.8
2010-01-01	40.9
2011-01-01	38.0
2012-01-01	34.9
2013-01-01	30.1
2014-01-01	30.1
2015-01-01	29.9
2016-01-01	30.0