Year Number of Firms 1992-01-01 328 1997-01-01 518 2002-01-01 612 2003-01-01 656 2004-01-01 740 2005-01-01 677 2006-01-01 681 2007-01-01 724 2008-01-01 759 2009-01-01 657 2010-01-01 753 2011-01-01 764 2012-01-01 776 2013-01-01 801 2014-01-01 845 2015-01-01 868 2016-01-01 855