Year	Thousands of Persons
1990-01-01	12.4
1991-01-01	13.6
1992-01-01	14.4
1993-01-01	15.6
1994-01-01	17.0
1995-01-01	17.4
1996-01-01	19.1
1997-01-01	21.1
1998-01-01	22.8
1999-01-01	24.0
2000-01-01	25.2
2001-01-01	25.3
2002-01-01	24.6
2003-01-01	26.1
2004-01-01	27.3
2005-01-01	28.4
2006-01-01	29.4
2007-01-01	30.3
2008-01-01	31.3
2009-01-01	32.1
2010-01-01	32.0
2011-01-01	32.6
2012-01-01	33.8
2013-01-01	35.3
2014-01-01	35.8
2015-01-01	36.4
2016-01-01	36.8
2017-01-01	36.9