Year	Thousands of Persons
1970-01-01	20800
1971-01-01	21000
1972-01-01	21150
1973-01-01	21430
1974-01-01	21660
1975-01-01	21642
1976-01-01	21911
1977-01-01	22226
1978-01-01	22364
1979-01-01	22576
1980-01-01	22719
1981-01-01	22856
1982-01-01	23825
1983-01-01	23865
1984-01-01	23967
1985-01-01	24130
1986-01-01	24360
1987-01-01	24404
1988-01-01	24406
1989-01-01	24590
1990-01-01	24606
1991-01-01	24556
1992-01-01	24752
1993-01-01	24848
1994-01-01	24946
1995-01-01	25084
1996-01-01	25370
1997-01-01	25337
1998-01-01	25451
1999-01-01	25695
2000-01-01	25970
2001-01-01	26109
2002-01-01	26432
2003-01-01	26663
2004-01-01	26845
2005-01-01	27028
2006-01-01	27219
2007-01-01	27435
2008-01-01	27642
2009-01-01	27920
2010-01-01	28043
2011-01-01	28101
2012-01-01	28371