Year	Thousands of Persons
1970-01-01	21162
1971-01-01	21523
1972-01-01	21737
1973-01-01	22022
1974-01-01	22158
1975-01-01	22167
1976-01-01	22193
1977-01-01	22339
1978-01-01	22536
1979-01-01	22798
1980-01-01	23157
1981-01-01	23433
1982-01-01	23628
1983-01-01	23732
1984-01-01	23837
1985-01-01	23941
1986-01-01	24071
1987-01-01	24227
1988-01-01	24383
1989-01-01	24620
1990-01-01	25145
1991-01-01	31432
1992-01-01	31826
1993-01-01	32233
1994-01-01	32429
1995-01-01	32596
1996-01-01	32769
1997-01-01	32990
1998-01-01	33056
1999-01-01	33315
2000-01-01	33386
2001-01-01	33549
2002-01-01	33716
2003-01-01	33887
2004-01-01	34040
2005-01-01	34227
2006-01-01	34326
2007-01-01	34384
2008-01-01	34444
2009-01-01	34431
2010-01-01	34410
2011-01-01	34502
2012-01-01	34718