Year Number of Firms 1992-01-01 20 1997-01-01 33 2002-01-01 31 2003-01-01 38 2004-01-01 36 2005-01-01 32 2006-01-01 42 2007-01-01 40 2008-01-01 45 2009-01-01 48 2010-01-01 60 2011-01-01 71 2012-01-01 75 2013-01-01 74 2014-01-01 83 2015-01-01 96 2016-01-01 92