Year Number of Firms 1992-01-01 7 1997-01-01 6 2002-01-01 13 2003-01-01 14 2004-01-01 19 2005-01-01 19 2006-01-01 20 2007-01-01 25 2008-01-01 24 2009-01-01 25 2010-01-01 37 2011-01-01 32 2012-01-01 22 2013-01-01 20 2014-01-01 26 2015-01-01 31 2016-01-01 11