Year Number of Firms 1992-01-01 8 1997-01-01 13 2002-01-01 16 2003-01-01 18 2004-01-01 29 2005-01-01 33 2006-01-01 39 2007-01-01 35 2008-01-01 40 2009-01-01 40 2010-01-01 45 2011-01-01 46 2012-01-01 45 2013-01-01 45 2014-01-01 47 2015-01-01 39 2016-01-01 58