Year	Thousands of Persons
1970-01-01	19723
1971-01-01	19656
1972-01-01	19450
1973-01-01	19594
1974-01-01	19904
1975-01-01	20085
1976-01-01	20294
1977-01-01	20508
1978-01-01	20575
1979-01-01	20852
1980-01-01	21115
1981-01-01	21319
1982-01-01	21406
1983-01-01	21590
1984-01-01	21672
1985-01-01	21802
1986-01-01	22294
1987-01-01	22351
1988-01-01	22658
1989-01-01	22533
1990-01-01	22670
1991-01-01	22944
1992-01-01	22913
1993-01-01	23386
1994-01-01	23190
1995-01-01	23171
1996-01-01	23234
1997-01-01	23283
1998-01-01	23508
1999-01-01	23639
2000-01-01	23765
2001-01-01	23893
2002-01-01	24051
2003-01-01	24071
2004-01-01	24084
2005-01-01	24179
2006-01-01	24395
2007-01-01	24459
2008-01-01	24836
2009-01-01	24705
2010-01-01	24699
2011-01-01	24820
2012-01-01	25363