Year Number of Firms 1992-01-01 8 1997-01-01 9 2002-01-01 11 2003-01-01 8 2004-01-01 8 2005-01-01 13 2006-01-01 10 2007-01-01 16 2008-01-01 26 2009-01-01 20 2010-01-01 15 2011-01-01 29 2012-01-01 32 2013-01-01 33 2014-01-01 25 2015-01-01 20 2016-01-01 18