Year Number of Firms 1992-01-01 376 1997-01-01 893 2002-01-01 1483 2003-01-01 1836 2004-01-01 1761 2005-01-01 2174 2006-01-01 2783 2007-01-01 3149 2008-01-01 3674 2009-01-01 3840 2010-01-01 4036 2011-01-01 4022 2012-01-01 4325 2013-01-01 4484 2014-01-01 4152 2015-01-01 4602 2016-01-01 3797