Year Number of Firms 1992-01-01 204 1997-01-01 285 2002-01-01 299 2003-01-01 336 2004-01-01 356 2005-01-01 349 2006-01-01 333 2007-01-01 356 2008-01-01 390 2009-01-01 370 2010-01-01 402 2011-01-01 389 2012-01-01 381 2013-01-01 388 2014-01-01 408 2015-01-01 424 2016-01-01 425