Year	Thousands of Persons
1970-01-01	20270
1971-01-01	20420
1972-01-01	20540
1973-01-01	20840
1974-01-01	21030
1975-01-01	20869
1976-01-01	21041
1977-01-01	21235
1978-01-01	21326
1979-01-01	21392
1980-01-01	21443
1981-01-01	21345
1982-01-01	22172
1983-01-01	22134
1984-01-01	21939
1985-01-01	21966
1986-01-01	22161
1987-01-01	22161
1988-01-01	22239
1989-01-01	22556
1990-01-01	22630
1991-01-01	22535
1992-01-01	22494
1993-01-01	22323
1994-01-01	22256
1995-01-01	22535
1996-01-01	22660
1997-01-01	22592
1998-01-01	22799
1999-01-01	23101
2000-01-01	23731
2001-01-01	24063
2002-01-01	24325
2003-01-01	24369
2004-01-01	24434
2005-01-01	24596
2006-01-01	24787
2007-01-01	25212
2008-01-01	25578
2009-01-01	25345
2010-01-01	25403
2011-01-01	25489
2012-01-01	25547