Year Thousands of Persons 1970-01-01 31.6667 1971-01-01 56.1667 1972-01-01 59.1667 1973-01-01 52.5000 1974-01-01 39.2500 1975-01-01 31.6667 1976-01-01 28.9167 1977-01-01 35.0750 1978-01-01 48.5833 1979-01-01 43.8500 1980-01-01 39.8167 1981-01-01 55.1167 1982-01-01 69.5333 1983-01-01 78.6417 1984-01-01 68.9417 1985-01-01 64.7583 1986-01-01 60.5333 1987-01-01 48.5500 1988-01-01 40.2250 1989-01-01 34.1583 1990-01-01 39.7250 1991-01-01 77.9583 1992-01-01 144.9167 1993-01-01 218.7500 1994-01-01 202.0917 1995-01-01 190.1250 1996-01-01 191.9750 1997-01-01 188.6417 1998-01-01 154.7667 1999-01-01 133.4917 2000-01-01 114.4500 2001-01-01 99.1500 2002-01-01 100.4167 2003-01-01 123.3500 2004-01-01 137.2667 2005-01-01 176.1417 2006-01-01 170.0667 2007-01-01 143.3083 2008-01-01 151.2917 2009-01-01 222.2667 2010-01-01 222.4500 2011-01-01 199.5167