Year	Thousands of Persons
1991-01-01	1.900
1992-01-01	3.200
1993-01-01	3.800
1994-01-01	3.800
1995-01-01	3.400
1996-01-01	2.800
1997-01-01	3.100
1998-01-01	2.300
1999-01-01	1.900
2000-01-01	2.200
2001-01-01	1.900
2002-01-01	2.200
2003-01-01	2.375
2004-01-01	2.225
2005-01-01	2.000
2006-01-01	2.450
2007-01-01	1.900
2008-01-01	2.150
2009-01-01	4.800
2010-01-01	5.775
2011-01-01	5.300