Year Number of Firms 1992-01-01 492 1997-01-01 636 2002-01-01 724 2003-01-01 749 2004-01-01 777 2005-01-01 776 2006-01-01 826 2007-01-01 883 2008-01-01 941 2009-01-01 880 2010-01-01 916 2011-01-01 924 2012-01-01 929 2013-01-01 920 2014-01-01 831 2015-01-01 835 2016-01-01 854