Year Number of Firms 1992-01-01 1 2003-01-01 4 2004-01-01 4 2005-01-01 6 2006-01-01 8 2007-01-01 8 2008-01-01 12 2009-01-01 15 2010-01-01 26 2011-01-01 21 2012-01-01 27 2013-01-01 33 2014-01-01 33 2015-01-01 17 2016-01-01 19