Year Number of Firms 1992-01-01 125 1997-01-01 231 2002-01-01 275 2003-01-01 233 2004-01-01 234 2005-01-01 244 2006-01-01 258 2007-01-01 266 2008-01-01 273 2009-01-01 264 2010-01-01 256 2011-01-01 302 2012-01-01 286 2013-01-01 319 2014-01-01 302 2015-01-01 318 2016-01-01 311