Year Number of Firms 1992-01-01 111 1997-01-01 208 2002-01-01 272 2003-01-01 297 2004-01-01 350 2005-01-01 403 2006-01-01 389 2007-01-01 441 2008-01-01 493 2009-01-01 508 2010-01-01 561 2011-01-01 674 2012-01-01 663 2013-01-01 699 2014-01-01 813 2015-01-01 845 2016-01-01 811