Year Number of Firms 1992-01-01 232 1997-01-01 315 2002-01-01 437 2003-01-01 471 2004-01-01 528 2005-01-01 618 2006-01-01 824 2007-01-01 1031 2008-01-01 1113 2009-01-01 1074 2010-01-01 986 2011-01-01 990 2012-01-01 992 2013-01-01 990 2014-01-01 1057 2015-01-01 1038 2016-01-01 1143