Year Number of Firms 1992-01-01 416 1997-01-01 495 2002-01-01 522 2003-01-01 540 2004-01-01 622 2005-01-01 626 2006-01-01 678 2007-01-01 747 2008-01-01 868 2009-01-01 766 2010-01-01 831 2011-01-01 765 2012-01-01 676 2013-01-01 671 2014-01-01 680 2015-01-01 654 2016-01-01 682