Year Number of Firms 1992-01-01 107 1997-01-01 121 2002-01-01 124 2003-01-01 146 2004-01-01 154 2005-01-01 156 2006-01-01 168 2007-01-01 185 2008-01-01 179 2009-01-01 164 2010-01-01 181 2011-01-01 183 2012-01-01 170 2013-01-01 165 2014-01-01 177 2015-01-01 165 2016-01-01 160