Year Number of Firms 1992-01-01 303 1997-01-01 354 2002-01-01 375 2003-01-01 398 2004-01-01 405 2005-01-01 367 2006-01-01 380 2007-01-01 397 2008-01-01 405 2009-01-01 403 2010-01-01 403 2011-01-01 434 2012-01-01 430 2013-01-01 438 2014-01-01 416 2015-01-01 412 2016-01-01 403