Year Number of Firms 1992-01-01 15 1997-01-01 36 2002-01-01 29 2003-01-01 31 2004-01-01 34 2005-01-01 50 2006-01-01 53 2007-01-01 57 2008-01-01 63 2009-01-01 57 2010-01-01 58 2011-01-01 68 2012-01-01 65 2013-01-01 75 2014-01-01 80 2015-01-01 96 2016-01-01 88