Year	Thousands of Persons
1988-01-01	13537.00
1989-01-01	13664.00
1990-01-01	13990.00
1991-01-01	14666.00
1992-01-01	15003.00
1993-01-01	15046.00
1994-01-01	15553.00
1995-01-01	15858.00
1996-01-01	16183.00
1997-01-01	16465.00
1998-01-01	16849.00
1999-01-01	17025.00
2000-01-01	16929.00
2001-01-01	17038.75
2002-01-01	17069.00
2003-01-01	17102.25
2004-01-01	17827.25
2005-01-01	16713.25
2006-01-01	16839.25
2007-01-01	17100.50
2008-01-01	17466.75
2009-01-01	17894.50
2010-01-01	18257.00
2011-01-01	18861.00