Year	Thousands of Persons
1990-01-01	56.4
1991-01-01	54.5
1992-01-01	53.8
1993-01-01	53.4
1994-01-01	55.3
1995-01-01	57.4
1996-01-01	59.3
1997-01-01	60.3
1998-01-01	57.6
1999-01-01	57.3
2000-01-01	57.3
2001-01-01	53.8
2002-01-01	49.3
2003-01-01	48.5
2004-01-01	48.3
2005-01-01	47.6
2006-01-01	45.5
2007-01-01	44.9
2008-01-01	41.3
2009-01-01	36.5
2010-01-01	34.3
2011-01-01	33.6
2012-01-01	33.1
2013-01-01	32.6
2014-01-01	32.1
2015-01-01	31.6
2016-01-01	30.3
2017-01-01	29.7