Year Number of Firms 1992-01-01 381 1997-01-01 513 2002-01-01 599 2003-01-01 582 2004-01-01 594 2005-01-01 605 2006-01-01 572 2007-01-01 650 2008-01-01 654 2009-01-01 697 2010-01-01 749 2011-01-01 704 2012-01-01 732 2013-01-01 688 2014-01-01 665 2015-01-01 672 2016-01-01 620