Year Number of Firms 1992-01-01 433 1997-01-01 646 2002-01-01 738 2003-01-01 746 2004-01-01 772 2005-01-01 769 2006-01-01 745 2007-01-01 856 2008-01-01 851 2009-01-01 776 2010-01-01 827 2011-01-01 863 2012-01-01 822 2013-01-01 830 2014-01-01 860 2015-01-01 872 2016-01-01 870