Year Number of Firms 1992-01-01 56 1997-01-01 67 2002-01-01 58 2003-01-01 57 2004-01-01 55 2005-01-01 57 2006-01-01 55 2007-01-01 65 2008-01-01 67 2009-01-01 67 2010-01-01 94 2011-01-01 91 2012-01-01 89 2013-01-01 85 2014-01-01 93 2015-01-01 82 2016-01-01 82