Year Number of Firms 1992-01-01 238 1997-01-01 413 2002-01-01 524 2003-01-01 531 2004-01-01 587 2005-01-01 611 2006-01-01 668 2007-01-01 717 2008-01-01 741 2009-01-01 662 2010-01-01 674 2011-01-01 722 2012-01-01 702 2013-01-01 732 2014-01-01 773 2015-01-01 694 2016-01-01 715