Year	Thousands of Persons
1970-01-01	17451
1971-01-01	17689
1972-01-01	17895
1973-01-01	18103
1974-01-01	18289
1975-01-01	18430
1976-01-01	18562
1977-01-01	18717
1978-01-01	18856
1979-01-01	19038
1980-01-01	19210
1981-01-01	19382
1982-01-01	19533
1983-01-01	19694
1984-01-01	19853
1985-01-01	20010
1986-01-01	20181
1987-01-01	20360
1988-01-01	20532
1989-01-01	20709
1990-01-01	20940
1991-01-01	21054
1992-01-01	21176
1993-01-01	21311
1994-01-01	21425
1995-01-01	21541
1996-01-01	21658
1997-01-01	21800
1998-01-01	21939
1999-01-01	22094
2000-01-01	22255
2001-01-01	22455
2002-01-01	22647
2003-01-01	22825
2004-01-01	23004
2005-01-01	23189
2006-01-01	23362
2007-01-01	23517
2008-01-01	23651
2009-01-01	23769
2010-01-01	23892
2011-01-01	24031
2012-01-01	24149