Year Number of Firms 1992-01-01 115 1997-01-01 165 2002-01-01 188 2003-01-01 211 2004-01-01 224 2005-01-01 250 2006-01-01 258 2007-01-01 326 2008-01-01 301 2009-01-01 326 2010-01-01 304 2011-01-01 340 2012-01-01 370 2013-01-01 382 2014-01-01 362 2015-01-01 404 2016-01-01 393