Year Persons 1986-01-01 19375 1987-01-01 20475 1988-01-01 26400 1989-01-01 30825 1990-01-01 31425 1991-01-01 42825 1992-01-01 41475 1993-01-01 36850 1994-01-01 31125 1995-01-01 24200 1996-01-01 24800 1997-01-01 26050 1998-01-01 29200 1999-01-01 26800 2000-01-01 25250 2001-01-01 21750 2002-01-01 21750 2003-01-01 19325 2004-01-01 17150 2005-01-01 18225 2006-01-01 19200 2007-01-01 20075 2008-01-01 22325 2009-01-01 29775 2010-01-01 30175 2011-01-01 32125 2012-01-01 31800 2013-01-01 27825 2014-01-01 26950 2015-01-01 29250 2016-01-01 29200 2017-01-01 28075