Year Number of Firms 1992-01-01 315 1997-01-01 533 2002-01-01 706 2003-01-01 680 2004-01-01 723 2005-01-01 746 2006-01-01 781 2007-01-01 880 2008-01-01 929 2009-01-01 860 2010-01-01 902 2011-01-01 924 2012-01-01 932 2013-01-01 881 2014-01-01 881 2015-01-01 949 2016-01-01 937