Year Number of Firms 1992-01-01 493 1997-01-01 694 2002-01-01 681 2003-01-01 689 2004-01-01 710 2005-01-01 721 2006-01-01 698 2007-01-01 744 2008-01-01 790 2009-01-01 658 2010-01-01 717 2011-01-01 714 2012-01-01 703 2013-01-01 704 2014-01-01 735 2015-01-01 709 2016-01-01 683