Year Number of Firms 1992-01-01 128 1997-01-01 191 2002-01-01 247 2003-01-01 264 2004-01-01 290 2005-01-01 272 2006-01-01 294 2007-01-01 330 2008-01-01 350 2009-01-01 337 2010-01-01 369 2011-01-01 406 2012-01-01 396 2013-01-01 426 2014-01-01 427 2015-01-01 462 2016-01-01 459