Year Number of Firms 1992-01-01 10 1997-01-01 20 2002-01-01 33 2003-01-01 38 2004-01-01 28 2005-01-01 42 2006-01-01 34 2007-01-01 41 2008-01-01 58 2009-01-01 55 2010-01-01 68 2011-01-01 68 2012-01-01 78 2013-01-01 70 2014-01-01 64 2015-01-01 70 2016-01-01 66