Year Number of Firms 1992-01-01 4 1997-01-01 3 2002-01-01 4 2003-01-01 2 2004-01-01 13 2005-01-01 12 2006-01-01 6 2007-01-01 31 2008-01-01 39 2009-01-01 30 2010-01-01 50 2011-01-01 51 2012-01-01 55 2013-01-01 61 2014-01-01 76 2015-01-01 64 2016-01-01 46