Year Number of Firms 1992-01-01 457 1997-01-01 465 2002-01-01 664 2003-01-01 672 2004-01-01 688 2005-01-01 705 2006-01-01 700 2007-01-01 799 2008-01-01 844 2009-01-01 745 2010-01-01 746 2011-01-01 703 2012-01-01 699 2013-01-01 662 2014-01-01 660 2015-01-01 677 2016-01-01 657