Year Number of Firms 1992-01-01 115 1997-01-01 275 2002-01-01 287 2003-01-01 280 2004-01-01 299 2005-01-01 305 2006-01-01 325 2007-01-01 365 2008-01-01 373 2009-01-01 371 2010-01-01 397 2011-01-01 413 2012-01-01 427 2013-01-01 431 2014-01-01 434 2015-01-01 419 2016-01-01 390