Year Number of Firms 1992-01-01 132 1997-01-01 227 2002-01-01 356 2003-01-01 385 2004-01-01 375 2005-01-01 435 2006-01-01 478 2007-01-01 503 2008-01-01 548 2009-01-01 539 2010-01-01 611 2011-01-01 612 2012-01-01 615 2013-01-01 634 2014-01-01 653 2015-01-01 710 2016-01-01 732