Year Number of Firms 1992-01-01 242 1997-01-01 653 2002-01-01 571 2003-01-01 485 2004-01-01 442 2005-01-01 438 2006-01-01 534 2007-01-01 692 2008-01-01 681 2009-01-01 559 2010-01-01 556 2011-01-01 551 2012-01-01 590 2013-01-01 540 2014-01-01 543 2015-01-01 513 2016-01-01 462