Year Number of Firms 1992-01-01 140 1997-01-01 175 2002-01-01 208 2003-01-01 205 2004-01-01 218 2005-01-01 232 2006-01-01 209 2007-01-01 256 2008-01-01 246 2009-01-01 204 2010-01-01 228 2011-01-01 239 2012-01-01 207 2013-01-01 209 2014-01-01 234 2015-01-01 200 2016-01-01 203