Year	Thousands of Persons
1990-01-01	15.6
1991-01-01	13.6
1992-01-01	12.6
1993-01-01	11.8
1994-01-01	14.3
1995-01-01	16.1
1996-01-01	16.2
1997-01-01	19.2
1998-01-01	16.9
1999-01-01	15.5
2000-01-01	14.7
2001-01-01	13.0
2002-01-01	11.8
2003-01-01	11.1
2004-01-01	10.3
2005-01-01	11.1
2006-01-01	10.4
2007-01-01	9.5
2008-01-01	7.8
2009-01-01	6.2
2010-01-01	5.9
2011-01-01	5.6
2012-01-01	4.9
2013-01-01	4.5
2014-01-01	4.8
2015-01-01	5.4
2016-01-01	5.2
2017-01-01	5.3