Year Number of Firms 1992-01-01 211 1997-01-01 346 2002-01-01 413 2003-01-01 434 2004-01-01 454 2005-01-01 493 2006-01-01 472 2007-01-01 534 2008-01-01 561 2009-01-01 559 2010-01-01 599 2011-01-01 642 2012-01-01 667 2013-01-01 676 2014-01-01 684 2015-01-01 653 2016-01-01 606