Year Number of Firms 1992-01-01 115 1997-01-01 269 2002-01-01 406 2003-01-01 442 2004-01-01 489 2005-01-01 500 2006-01-01 539 2007-01-01 620 2008-01-01 658 2009-01-01 517 2010-01-01 638 2011-01-01 743 2012-01-01 787 2013-01-01 830 2014-01-01 788 2015-01-01 631 2016-01-01 624