Year Number of Firms 1992-01-01 220 1997-01-01 328 2002-01-01 389 2003-01-01 414 2004-01-01 414 2005-01-01 436 2006-01-01 470 2007-01-01 561 2008-01-01 674 2009-01-01 690 2010-01-01 748 2011-01-01 834 2012-01-01 822 2013-01-01 834 2014-01-01 843 2015-01-01 886 2016-01-01 858