Year Number of Firms 1992-01-01 275 1997-01-01 468 2002-01-01 424 2003-01-01 445 2004-01-01 479 2005-01-01 521 2006-01-01 537 2007-01-01 577 2008-01-01 622 2009-01-01 585 2010-01-01 643 2011-01-01 724 2012-01-01 719 2013-01-01 752 2014-01-01 776 2015-01-01 742 2016-01-01 738