Year	Thousands of Persons
1961-01-01	120.000
1971-01-01	67.000
1977-01-01	28.000
1978-01-01	31.000
1979-01-01	31.000
1980-01-01	52.000
1981-01-01	82.000
1982-01-01	121.000
1983-01-01	148.000
1984-01-01	152.000
1985-01-01	142.000
1986-01-01	127.000
1987-01-01	128.000
1988-01-01	122.000
1989-01-01	115.000
1990-01-01	107.000
1991-01-01	121.000
1992-01-01	138.000
1993-01-01	164.000
1994-01-01	170.000
1995-01-01	176.000
1996-01-01	167.000
1997-01-01	172.000
1998-01-01	203.925
1999-01-01	222.975
2000-01-01	208.075
2001-01-01	201.225
2002-01-01	190.850
2003-01-01	176.025
2004-01-01	188.150
2005-01-01	175.500
2006-01-01	162.425
2007-01-01	151.125
2008-01-01	147.900
2009-01-01	200.000
2010-01-01	288.750
2011-01-01	428.900