Year Number of Firms 1992-01-01 419 1997-01-01 670 2002-01-01 778 2003-01-01 846 2004-01-01 1068 2005-01-01 1598 2006-01-01 1900 2007-01-01 2339 2008-01-01 2580 2009-01-01 2300 2010-01-01 2107 2011-01-01 1883 2012-01-01 2225 2013-01-01 2133 2014-01-01 2160 2015-01-01 2277 2016-01-01 2493