Year Number of Firms 1992-01-01 117 1997-01-01 276 2002-01-01 388 2003-01-01 423 2004-01-01 506 2005-01-01 559 2006-01-01 641 2007-01-01 743 2008-01-01 850 2009-01-01 921 2010-01-01 1011 2011-01-01 1038 2012-01-01 1055 2013-01-01 986 2014-01-01 988 2015-01-01 1016 2016-01-01 1054