Year Number of Firms 1992-01-01 483 1997-01-01 732 2002-01-01 635 2003-01-01 604 2004-01-01 512 2005-01-01 548 2006-01-01 655 2007-01-01 707 2008-01-01 728 2009-01-01 628 2010-01-01 697 2011-01-01 700 2012-01-01 732 2013-01-01 711 2014-01-01 709 2015-01-01 684 2016-01-01 630