Year Number of Firms 1992-01-01 24 1997-01-01 34 2002-01-01 66 2003-01-01 65 2004-01-01 73 2005-01-01 76 2006-01-01 98 2007-01-01 108 2008-01-01 144 2009-01-01 132 2010-01-01 142 2011-01-01 155 2012-01-01 137 2013-01-01 134 2014-01-01 134 2015-01-01 148 2016-01-01 168