Year	Thousands of Persons
1990-01-01	23.7
1991-01-01	23.6
1992-01-01	23.7
1993-01-01	24.8
1994-01-01	25.1
1995-01-01	25.6
1996-01-01	25.4
1997-01-01	25.4
1998-01-01	24.1
1999-01-01	24.6
2000-01-01	25.2
2001-01-01	26.1
2002-01-01	27.0
2003-01-01	26.8
2004-01-01	27.5
2005-01-01	28.8
2006-01-01	28.4
2007-01-01	28.0
2008-01-01	28.1
2009-01-01	27.1
2010-01-01	27.6
2011-01-01	26.7
2012-01-01	26.7
2013-01-01	27.0
2014-01-01	26.6
2015-01-01	26.1
2016-01-01	26.7
2017-01-01	26.3