Year Number of Firms 1992-01-01 30 1997-01-01 58 2002-01-01 97 2003-01-01 117 2004-01-01 127 2005-01-01 136 2006-01-01 145 2007-01-01 135 2008-01-01 125 2009-01-01 129 2010-01-01 145 2011-01-01 157 2012-01-01 176 2013-01-01 186 2014-01-01 199 2015-01-01 206 2016-01-01 214