Year	Thousands of Persons
1990-01-01	11.4
1991-01-01	11.3
1992-01-01	12.0
1993-01-01	12.8
1994-01-01	13.1
1995-01-01	13.7
1996-01-01	13.7
1997-01-01	13.7
1998-01-01	13.3
1999-01-01	14.6
2000-01-01	15.4
2001-01-01	15.4
2002-01-01	14.8
2003-01-01	14.6
2004-01-01	14.8
2005-01-01	14.6
2006-01-01	14.9
2007-01-01	14.1
2008-01-01	13.2
2009-01-01	13.3
2010-01-01	13.9
2011-01-01	14.1
2012-01-01	14.4