Year Number of Firms 1992-01-01 412 1997-01-01 476 2002-01-01 553 2003-01-01 541 2004-01-01 585 2005-01-01 623 2006-01-01 595 2007-01-01 698 2008-01-01 697 2009-01-01 642 2010-01-01 685 2011-01-01 683 2012-01-01 644 2013-01-01 664 2014-01-01 662 2015-01-01 679 2016-01-01 657