Year Number of Firms 1992-01-01 820 1997-01-01 1671 2002-01-01 2854 2003-01-01 2566 2004-01-01 2805 2005-01-01 3358 2006-01-01 3883 2007-01-01 4402 2008-01-01 4757 2009-01-01 4676 2010-01-01 5384 2011-01-01 5404 2012-01-01 5689 2013-01-01 5727 2014-01-01 5879 2015-01-01 6146 2016-01-01 6138