Year Number of Firms 1992-01-01 111 1997-01-01 192 2002-01-01 184 2003-01-01 175 2004-01-01 170 2005-01-01 165 2006-01-01 172 2007-01-01 187 2008-01-01 201 2009-01-01 178 2010-01-01 190 2011-01-01 197 2012-01-01 210 2013-01-01 203 2014-01-01 189 2015-01-01 176 2016-01-01 157