Year	Thousands of Persons
1999-01-01	33.725
2000-01-01	31.400
2001-01-01	30.425
2002-01-01	30.300
2003-01-01	31.100
2004-01-01	31.450
2005-01-01	32.825
2006-01-01	33.875
2007-01-01	27.600
2008-01-01	22.975
2009-01-01	27.750
2010-01-01	33.400
2011-01-01	38.300