Year Number of Firms 1992-01-01 36 1997-01-01 35 2002-01-01 37 2003-01-01 39 2004-01-01 47 2005-01-01 45 2006-01-01 40 2007-01-01 44 2008-01-01 60 2009-01-01 58 2010-01-01 57 2011-01-01 64 2012-01-01 50 2013-01-01 50 2014-01-01 57 2015-01-01 56 2016-01-01 45