Year	Thousands of Persons
1961-01-01	55.200
1966-01-01	51.200
1967-01-01	47.000
1968-01-01	51.000
1969-01-01	47.000
1970-01-01	56.000
1971-01-01	63.400
1972-01-01	57.000
1973-01-01	53.000
1974-01-01	51.000
1975-01-01	83.700
1976-01-01	84.000
1977-01-01	82.600
1978-01-01	79.000
1979-01-01	63.800
1980-01-01	66.000
1981-01-01	103.900
1982-01-01	111.000
1983-01-01	140.100
1984-01-01	156.500
1985-01-01	143.800
1986-01-01	146.200
1987-01-01	145.300
1988-01-01	139.200
1989-01-01	128.400
1990-01-01	108.400
1991-01-01	124.900
1992-01-01	132.300
1993-01-01	138.600
1994-01-01	131.900
1995-01-01	110.400
1996-01-01	109.800
1997-01-01	97.000
1998-01-01	76.700
1999-01-01	57.975
2000-01-01	46.125
2001-01-01	43.025
2002-01-01	51.150
2003-01-01	55.550
2004-01-01	55.375
2005-01-01	54.000
2006-01-01	56.375
2007-01-01	61.400
2008-01-01	90.200
2009-01-01	181.350
2010-01-01	199.850
2011-01-01	203.875