Year	Thousands of Persons
1961-01-01	15.900
1966-01-01	15.300
1967-01-01	9.000
1968-01-01	9.000
1969-01-01	9.000
1970-01-01	9.000
1971-01-01	14.600
1972-01-01	12.000
1973-01-01	11.000
1974-01-01	10.000
1975-01-01	25.500
1976-01-01	21.000
1977-01-01	22.000
1978-01-01	20.000
1979-01-01	20.500
1980-01-01	25.000
1981-01-01	29.500
1982-01-01	37.000
1983-01-01	43.400
1984-01-01	47.300
1985-01-01	75.600
1986-01-01	79.100
1987-01-01	79.300
1988-01-01	76.200
1989-01-01	68.400
1990-01-01	63.900
1991-01-01	73.600
1992-01-01	74.400
1993-01-01	81.400
1994-01-01	79.100
1995-01-01	66.800
1996-01-01	69.100
1997-01-01	62.000
1998-01-01	47.800
1999-01-01	38.075
2000-01-01	30.475
2001-01-01	28.175
2002-01-01	31.550
2003-01-01	34.550
2004-01-01	33.350
2005-01-01	34.575
2006-01-01	38.025
2007-01-01	39.975
2008-01-01	44.525
2009-01-01	77.000
2010-01-01	91.600
2011-01-01	100.050