Year Number of Firms 1992-01-01 457 1997-01-01 600 2002-01-01 678 2003-01-01 669 2004-01-01 693 2005-01-01 680 2006-01-01 658 2007-01-01 728 2008-01-01 710 2009-01-01 681 2010-01-01 697 2011-01-01 688 2012-01-01 642 2013-01-01 652 2014-01-01 666 2015-01-01 671 2016-01-01 655