Year Number of Firms 1992-01-01 23 1997-01-01 55 2002-01-01 70 2003-01-01 59 2004-01-01 60 2005-01-01 62 2006-01-01 57 2007-01-01 72 2008-01-01 78 2009-01-01 69 2010-01-01 76 2011-01-01 81 2012-01-01 77 2013-01-01 92 2014-01-01 99 2015-01-01 95 2016-01-01 89