Year	Thousands of Persons
1990-01-01	4.6
1991-01-01	4.6
1992-01-01	4.5
1993-01-01	4.3
1994-01-01	4.2
1995-01-01	4.0
1996-01-01	4.1
1997-01-01	4.2
1998-01-01	4.3
1999-01-01	4.2
2000-01-01	4.0
2001-01-01	3.6
2002-01-01	3.4
2003-01-01	3.3
2004-01-01	3.2
2005-01-01	2.3
2006-01-01	2.3
2007-01-01	2.1
2008-01-01	2.0
2009-01-01	1.9
2010-01-01	1.8
2011-01-01	1.7
2012-01-01	1.6