Year	Thousands of Persons
1961-01-01	95.000
1971-01-01	35.000
1977-01-01	28.000
1978-01-01	30.000
1979-01-01	33.000
1980-01-01	43.000
1981-01-01	67.000
1982-01-01	94.000
1983-01-01	154.000
1984-01-01	163.000
1985-01-01	162.000
1986-01-01	160.000
1987-01-01	158.000
1988-01-01	182.000
1989-01-01	181.000
1990-01-01	174.000
1991-01-01	180.000
1992-01-01	212.000
1993-01-01	233.000
1994-01-01	233.000
1995-01-01	248.000
1996-01-01	279.000
1997-01-01	267.000
1998-01-01	303.975
1999-01-01	331.775
2000-01-01	315.350
2001-01-01	292.675
2002-01-01	289.300
2003-01-01	283.775
2004-01-01	317.450
2005-01-01	301.850
2006-01-01	272.050
2007-01-01	255.800
2008-01-01	229.975
2009-01-01	271.100
2010-01-01	339.975
2011-01-01	448.025