Year Number of Firms 1992-01-01 184 1997-01-01 328 2002-01-01 379 2003-01-01 414 2004-01-01 463 2005-01-01 509 2006-01-01 511 2007-01-01 550 2008-01-01 596 2009-01-01 536 2010-01-01 608 2011-01-01 682 2012-01-01 663 2013-01-01 750 2014-01-01 702 2015-01-01 661 2016-01-01 690