Year Number of Firms 1992-01-01 63 1997-01-01 111 2002-01-01 111 2003-01-01 135 2004-01-01 137 2005-01-01 165 2006-01-01 189 2007-01-01 207 2008-01-01 248 2009-01-01 222 2010-01-01 239 2011-01-01 255 2012-01-01 269 2013-01-01 252 2014-01-01 285 2015-01-01 277 2016-01-01 250