Year Number of Firms 1992-01-01 26 1997-01-01 25 2002-01-01 25 2003-01-01 26 2004-01-01 25 2005-01-01 23 2006-01-01 23 2007-01-01 17 2008-01-01 28 2009-01-01 18 2010-01-01 22 2011-01-01 21 2012-01-01 25 2013-01-01 20 2014-01-01 18 2015-01-01 14 2016-01-01 11