Year Number of Firms 1992-01-01 9 1997-01-01 26 2002-01-01 48 2003-01-01 54 2004-01-01 58 2005-01-01 37 2006-01-01 63 2007-01-01 57 2008-01-01 64 2009-01-01 71 2010-01-01 72 2011-01-01 86 2012-01-01 80 2013-01-01 80 2014-01-01 96 2015-01-01 81 2016-01-01 79