Year	Thousands of Persons
1990-01-01	21.7
1991-01-01	21.5
1992-01-01	21.7
1993-01-01	22.8
1994-01-01	23.2
1995-01-01	23.7
1996-01-01	23.4
1997-01-01	23.5
1998-01-01	22.2
1999-01-01	22.8
2000-01-01	23.4
2001-01-01	24.4
2002-01-01	25.3
2003-01-01	25.1
2004-01-01	25.7
2005-01-01	26.8
2006-01-01	26.6
2007-01-01	26.3
2008-01-01	26.6
2009-01-01	25.9
2010-01-01	26.4
2011-01-01	25.5
2012-01-01	25.2