Year Number of Firms 1992-01-01 6 1997-01-01 11 2002-01-01 15 2003-01-01 16 2004-01-01 12 2005-01-01 13 2006-01-01 15 2007-01-01 28 2008-01-01 30 2009-01-01 26 2010-01-01 26 2011-01-01 35 2012-01-01 31 2013-01-01 36 2014-01-01 40 2015-01-01 34 2016-01-01 25