Year Number of Firms 1992-01-01 455 1997-01-01 473 2002-01-01 610 2003-01-01 635 2004-01-01 674 2005-01-01 722 2006-01-01 715 2007-01-01 816 2008-01-01 783 2009-01-01 709 2010-01-01 683 2011-01-01 677 2012-01-01 620 2013-01-01 681 2014-01-01 629 2015-01-01 635 2016-01-01 657