Year Number of Firms 1992-01-01 135 1997-01-01 132 2002-01-01 133 2003-01-01 140 2004-01-01 150 2005-01-01 162 2006-01-01 158 2007-01-01 167 2008-01-01 199 2009-01-01 191 2010-01-01 187 2011-01-01 168 2012-01-01 178 2013-01-01 182 2014-01-01 175 2015-01-01 178 2016-01-01 164