Year Number of Firms 1992-01-01 884 1997-01-01 1356 2002-01-01 2144 2003-01-01 2263 2004-01-01 2354 2005-01-01 2813 2006-01-01 3424 2007-01-01 4134 2008-01-01 4641 2009-01-01 4495 2010-01-01 4432 2011-01-01 4557 2012-01-01 4618 2013-01-01 4619 2014-01-01 4689 2015-01-01 5142 2016-01-01 5365