Year	Thousands of Persons
1991-01-01	3.600
1992-01-01	6.200
1993-01-01	7.600
1994-01-01	7.700
1995-01-01	7.200
1996-01-01	5.500
1997-01-01	5.700
1998-01-01	4.200
1999-01-01	3.100
2000-01-01	3.700
2001-01-01	3.700
2002-01-01	5.300
2003-01-01	5.450
2004-01-01	4.925
2005-01-01	4.275
2006-01-01	5.025
2007-01-01	4.150
2008-01-01	5.525
2009-01-01	13.075
2010-01-01	13.675
2011-01-01	12.700