Year Number of Firms 1992-01-01 1978 1997-01-01 2875 2002-01-01 3593 2003-01-01 2483 2004-01-01 3499 2005-01-01 4412 2006-01-01 4650 2007-01-01 4945 2008-01-01 5625 2009-01-01 5873 2010-01-01 5856 2011-01-01 6768 2012-01-01 7381 2013-01-01 6425 2014-01-01 6218 2015-01-01 4888 2016-01-01 4199