Year Number of Firms 1992-01-01 355 1997-01-01 473 2002-01-01 495 2003-01-01 484 2004-01-01 541 2005-01-01 512 2006-01-01 566 2007-01-01 598 2008-01-01 637 2009-01-01 681 2010-01-01 675 2011-01-01 723 2012-01-01 712 2013-01-01 685 2014-01-01 704 2015-01-01 635 2016-01-01 641