Year Number of Firms 1992-01-01 169 1997-01-01 276 2002-01-01 351 2003-01-01 398 2004-01-01 437 2005-01-01 449 2006-01-01 489 2007-01-01 561 2008-01-01 581 2009-01-01 569 2010-01-01 654 2011-01-01 686 2012-01-01 684 2013-01-01 728 2014-01-01 684 2015-01-01 723 2016-01-01 745