Year Number of Firms 1992-01-01 372 1997-01-01 493 2002-01-01 533 2003-01-01 514 2004-01-01 507 2005-01-01 522 2006-01-01 549 2007-01-01 616 2008-01-01 695 2009-01-01 661 2010-01-01 622 2011-01-01 696 2012-01-01 635 2013-01-01 700 2014-01-01 674 2015-01-01 710 2016-01-01 754