Year	Thousands of Persons
1990-01-01	2.1
1991-01-01	2.2
1992-01-01	2.2
1993-01-01	3.1
1994-01-01	2.1
1995-01-01	2.0
1996-01-01	2.0
1997-01-01	2.2
1998-01-01	2.3
1999-01-01	2.0
2000-01-01	1.5
2001-01-01	1.6
2002-01-01	1.6
2003-01-01	1.5
2004-01-01	1.7
2005-01-01	1.8
2006-01-01	1.9
2007-01-01	1.8
2008-01-01	1.9
2009-01-01	1.9
2010-01-01	1.9
2011-01-01	2.0
2012-01-01	1.9
2013-01-01	1.9
2014-01-01	1.9
2015-01-01	1.9
2016-01-01	1.8
2017-01-01	1.8