Year Number of Firms 1992-01-01 26 1997-01-01 29 2002-01-01 42 2003-01-01 39 2004-01-01 42 2005-01-01 38 2006-01-01 40 2007-01-01 53 2008-01-01 56 2009-01-01 50 2010-01-01 43 2011-01-01 42 2012-01-01 35 2013-01-01 28 2014-01-01 39 2015-01-01 30 2016-01-01 25