Year Number of Firms 1992-01-01 273 1997-01-01 520 2002-01-01 504 2003-01-01 548 2004-01-01 566 2005-01-01 549 2006-01-01 562 2007-01-01 607 2008-01-01 668 2009-01-01 657 2010-01-01 665 2011-01-01 710 2012-01-01 773 2013-01-01 785 2014-01-01 822 2015-01-01 842 2016-01-01 794