Year Number of Firms 1992-01-01 424 1997-01-01 544 2002-01-01 612 2003-01-01 616 2004-01-01 643 2005-01-01 632 2006-01-01 644 2007-01-01 679 2008-01-01 704 2009-01-01 647 2010-01-01 677 2011-01-01 730 2012-01-01 734 2013-01-01 694 2014-01-01 690 2015-01-01 751 2016-01-01 723