Year Number of Firms 1992-01-01 92 1997-01-01 125 2002-01-01 153 2003-01-01 172 2004-01-01 195 2005-01-01 209 2006-01-01 184 2007-01-01 211 2008-01-01 233 2009-01-01 213 2010-01-01 207 2011-01-01 205 2012-01-01 188 2013-01-01 177 2014-01-01 215 2015-01-01 201 2016-01-01 223