Year Number of Firms 1992-01-01 24 1997-01-01 28 2002-01-01 48 2003-01-01 50 2004-01-01 58 2005-01-01 76 2006-01-01 51 2007-01-01 72 2008-01-01 79 2009-01-01 76 2010-01-01 85 2011-01-01 66 2012-01-01 71 2013-01-01 69 2014-01-01 73 2015-01-01 71 2016-01-01 73