Year Number of Firms 1992-01-01 12 1997-01-01 10 2002-01-01 15 2003-01-01 14 2004-01-01 16 2005-01-01 25 2006-01-01 21 2007-01-01 32 2008-01-01 30 2009-01-01 30 2010-01-01 29 2011-01-01 27 2012-01-01 34 2013-01-01 34 2014-01-01 32 2015-01-01 25 2016-01-01 21