Year Number of Firms 1992-01-01 210 1997-01-01 271 2002-01-01 263 2003-01-01 293 2004-01-01 261 2005-01-01 279 2006-01-01 295 2007-01-01 288 2008-01-01 314 2009-01-01 298 2010-01-01 323 2011-01-01 319 2012-01-01 294 2013-01-01 315 2014-01-01 287 2015-01-01 309 2016-01-01 314