Year Number of Firms 1992-01-01 89 1997-01-01 209 2002-01-01 332 2003-01-01 337 2004-01-01 356 2005-01-01 387 2006-01-01 424 2007-01-01 437 2008-01-01 486 2009-01-01 501 2010-01-01 599 2011-01-01 720 2012-01-01 730 2013-01-01 687 2014-01-01 636 2015-01-01 685 2016-01-01 669