Year Number of Firms 2003-01-01 1 2004-01-01 2 2005-01-01 1 2006-01-01 2 2007-01-01 5 2008-01-01 3 2009-01-01 8 2010-01-01 15 2011-01-01 15 2012-01-01 10 2013-01-01 11 2014-01-01 14 2015-01-01 15 2016-01-01 11