Year Thousands of Persons 1956-01-01 25635.00 1957-01-01 25966.00 1958-01-01 26137.00 1959-01-01 26109.00 1960-01-01 26225.00 1961-01-01 26419.00 1962-01-01 26446.00 1963-01-01 26505.00 1964-01-01 26466.00 1965-01-01 26565.00 1966-01-01 26481.00 1967-01-01 25920.00 1968-01-01 25814.00 1969-01-01 26050.00 1970-01-01 26318.00 1971-01-01 26502.00 1972-01-01 26460.00 1973-01-01 26684.00 1974-01-01 26620.00 1975-01-01 26359.00 1976-01-01 26119.00 1977-01-01 26044.00 1978-01-01 26162.00 1979-01-01 26391.00 1980-01-01 27417.00 1981-01-01 27770.00 1982-01-01 28026.00 1983-01-01 28067.00 1984-01-01 27771.00 1985-01-01 27913.00 1986-01-01 28242.00 1987-01-01 28507.00 1988-01-01 28693.00 1989-01-01 29104.00 1990-01-01 30273.00 1991-01-01 39075.00 1992-01-01 39005.00 1993-01-01 39102.00 1994-01-01 39074.00 1995-01-01 38980.00 1996-01-01 39142.00 1997-01-01 39415.00 1998-01-01 39754.00 1999-01-01 39375.29 2000-01-01 39300.72 2001-01-01 39455.54 2002-01-01 39499.30 2003-01-01 39591.36 2004-01-01 39795.64 2005-01-01 40932.45 2006-01-01 41417.70 2007-01-01 41589.62 2008-01-01 41677.48 2009-01-01 41699.28 2010-01-01 41683.38 2011-01-01 42239.55