Year Number of Firms 1992-01-01 464 1997-01-01 652 2002-01-01 634 2003-01-01 640 2004-01-01 693 2005-01-01 727 2006-01-01 686 2007-01-01 767 2008-01-01 848 2009-01-01 818 2010-01-01 876 2011-01-01 933 2012-01-01 919 2013-01-01 870 2014-01-01 872 2015-01-01 872 2016-01-01 836