Year Number of Firms 1992-01-01 100 1997-01-01 176 2002-01-01 137 2003-01-01 155 2004-01-01 167 2005-01-01 177 2006-01-01 162 2007-01-01 200 2008-01-01 197 2009-01-01 160 2010-01-01 198 2011-01-01 199 2012-01-01 183 2013-01-01 184 2014-01-01 188 2015-01-01 171 2016-01-01 172