Year	Thousands of Persons
1970-01-01	10305
1971-01-01	9813
1972-01-01	9690
1973-01-01	9771
1974-01-01	9569
1975-01-01	9113
1976-01-01	8950
1977-01-01	8931
1978-01-01	8923
1979-01-01	8996
1980-01-01	8998
1981-01-01	8828
1982-01-01	8567
1983-01-01	8284
1984-01-01	8285
1985-01-01	8403
1986-01-01	8515
1987-01-01	8506
1988-01-01	8479
1989-01-01	8594
1990-01-01	8839
1991-01-01	11315
1992-01-01	10731
1993-01-01	10099
1994-01-01	9525
1995-01-01	9017
1996-01-01	8643
1997-01-01	8521
1998-01-01	8687
1999-01-01	8591
2000-01-01	8647
2001-01-01	8626
2002-01-01	8504
2003-01-01	8286
2004-01-01	8242
2005-01-01	8015
2006-01-01	8145
2007-01-01	8391
2008-01-01	8510
2009-01-01	7848
2010-01-01	7747
2011-01-01	7898
2012-01-01	7915