Year Number of Firms 1992-01-01 6 1997-01-01 4 2002-01-01 6 2003-01-01 7 2004-01-01 16 2005-01-01 8 2006-01-01 14 2007-01-01 10 2008-01-01 11 2009-01-01 10 2010-01-01 11 2011-01-01 14 2012-01-01 16 2013-01-01 15 2014-01-01 17 2015-01-01 16 2016-01-01 12