Year	Thousands of Persons
1971-01-01	8037
1972-01-01	8127
1973-01-01	8256
1974-01-01	8279
1975-01-01	8110
1976-01-01	8022
1977-01-01	8017
1978-01-01	7914
1979-01-01	7819
1980-01-01	7738
1981-01-01	7579
1982-01-01	7432
1983-01-01	7270
1984-01-01	7024
1985-01-01	6819
1986-01-01	6698
1987-01-01	6606
1988-01-01	6573
1989-01-01	6634
1990-01-01	6676
1991-01-01	6583
1992-01-01	6359
1993-01-01	6073
1994-01-01	5908
1995-01-01	5884
1996-01-01	5812
1997-01-01	5734
1998-01-01	5725
1999-01-01	5749
2000-01-01	5838
2001-01-01	5921
2002-01-01	5893
2003-01-01	5806
2004-01-01	5735
2005-01-01	5708
2006-01-01	5725
2007-01-01	5751
2008-01-01	5690
2009-01-01	5431
2010-01-01	5316
2011-01-01	5330
2012-01-01	5221