Year Number of Firms 1992-01-01 618 1997-01-01 679 2002-01-01 596 2003-01-01 619 2004-01-01 622 2005-01-01 589 2006-01-01 618 2007-01-01 670 2008-01-01 704 2009-01-01 661 2010-01-01 693 2011-01-01 695 2012-01-01 691 2013-01-01 629 2014-01-01 655 2015-01-01 618 2016-01-01 584