Year Thousands of Persons 1970-01-01 3912.917 1971-01-01 3960.583 1972-01-01 3969.500 1973-01-01 3977.167 1974-01-01 4042.750 1975-01-01 4129.083 1976-01-01 4154.667 1977-01-01 4173.750 1978-01-01 4209.084 1979-01-01 4267.917 1980-01-01 4320 1981-01-01 4332.334 1982-01-01 4356.584 1983-01-01 4375.084 1984-01-01 4390.750 1985-01-01 4367.167 1986-01-01 4384 1987-01-01 4409.609 1988-01-01 4452.634 1989-01-01 4507.875 1990-01-01 4559.017 1991-01-01 4528.934 1992-01-01 4441.309 1993-01-01 4319.834 1994-01-01 4266.450 1995-01-01 4320.092 1996-01-01 4310.575 1997-01-01 4263.384 1998-01-01 4255.609 1999-01-01 4307.967 2000-01-01 4360.167 2001-01-01 4414.167 2002-01-01 4418 2003-01-01 4448.417 2004-01-01 4459.250 2005-01-01 4651.384 2006-01-01 4764.842 2007-01-01 4839.117 2008-01-01 4897.149 2009-01-01 4906.617 2010-01-01 4960.575 2011-01-01 5018.275