Year	Thousands of Persons
1990-01-01	33.0
1991-01-01	33.2
1992-01-01	32.1
1993-01-01	31.1
1994-01-01	27.5
1995-01-01	27.4
1996-01-01	24.9
1997-01-01	22.8
1998-01-01	19.8
1999-01-01	18.5
2000-01-01	17.3
2001-01-01	13.9
2002-01-01	10.5
2003-01-01	8.5
2004-01-01	9.0
2005-01-01	8.5
2006-01-01	8.0
2007-01-01	8.6
2008-01-01	10.1
2009-01-01	9.2
2010-01-01	8.5
2011-01-01	9.1
2012-01-01	9.1
2013-01-01	4.9
2014-01-01	5.4
2015-01-01	5.9
2016-01-01	6.2
2017-01-01	5.2