Year Number of Firms 1992-01-01 340 1997-01-01 439 2002-01-01 498 2003-01-01 609 2004-01-01 637 2005-01-01 699 2006-01-01 684 2007-01-01 766 2008-01-01 877 2009-01-01 909 2010-01-01 899 2011-01-01 932 2012-01-01 1017 2013-01-01 1034 2014-01-01 1036 2015-01-01 1017 2016-01-01 999