Year Number of Firms 1992-01-01 7 1997-01-01 5 2002-01-01 7 2003-01-01 9 2004-01-01 9 2005-01-01 11 2006-01-01 7 2007-01-01 15 2008-01-01 15 2009-01-01 16 2010-01-01 17 2011-01-01 16 2012-01-01 19 2013-01-01 22 2014-01-01 21 2015-01-01 29 2016-01-01 33