Year Number of Firms 1992-01-01 354 1997-01-01 493 2002-01-01 457 2003-01-01 505 2004-01-01 500 2005-01-01 516 2006-01-01 531 2007-01-01 582 2008-01-01 607 2009-01-01 606 2010-01-01 691 2011-01-01 748 2012-01-01 722 2013-01-01 700 2014-01-01 705 2015-01-01 678 2016-01-01 670