Year Number of Firms 1992-01-01 83 1997-01-01 109 2002-01-01 133 2003-01-01 169 2004-01-01 166 2005-01-01 156 2006-01-01 191 2007-01-01 205 2008-01-01 231 2009-01-01 246 2010-01-01 280 2011-01-01 303 2012-01-01 290 2013-01-01 320 2014-01-01 304 2015-01-01 311 2016-01-01 303