Year Number of Firms 1992-01-01 329 1997-01-01 463 2002-01-01 494 2003-01-01 503 2004-01-01 514 2005-01-01 537 2006-01-01 539 2007-01-01 589 2008-01-01 680 2009-01-01 668 2010-01-01 736 2011-01-01 777 2012-01-01 762 2013-01-01 828 2014-01-01 779 2015-01-01 761 2016-01-01 708