Year	Thousands of Persons
1961-01-01	215.000
1971-01-01	102.000
1977-01-01	56.000
1978-01-01	61.000
1979-01-01	64.000
1980-01-01	95.000
1981-01-01	149.000
1982-01-01	215.000
1983-01-01	302.000
1984-01-01	315.000
1985-01-01	304.000
1986-01-01	287.000
1987-01-01	286.000
1988-01-01	304.000
1989-01-01	296.000
1990-01-01	281.000
1991-01-01	301.000
1992-01-01	350.000
1993-01-01	397.080
1994-01-01	402.735
1995-01-01	423.983
1996-01-01	445.703
1997-01-01	439.404
1998-01-01	507.900
1999-01-01	554.750
2000-01-01	523.475
2001-01-01	493.925
2002-01-01	480.150
2003-01-01	459.825
2004-01-01	505.625
2005-01-01	477.350
2006-01-01	434.475
2007-01-01	406.925
2008-01-01	377.850
2009-01-01	471.100
2010-01-01	628.700
2011-01-01	876.900