Year Number of Firms 1992-01-01 636 1997-01-01 661 2002-01-01 619 2003-01-01 609 2004-01-01 649 2005-01-01 678 2006-01-01 683 2007-01-01 692 2008-01-01 762 2009-01-01 712 2010-01-01 665 2011-01-01 654 2012-01-01 548 2013-01-01 596 2014-01-01 614 2015-01-01 579 2016-01-01 575