Year Number of Firms 1992-01-01 18 1997-01-01 51 2002-01-01 52 2003-01-01 52 2004-01-01 44 2005-01-01 60 2006-01-01 60 2007-01-01 77 2008-01-01 82 2009-01-01 84 2010-01-01 99 2011-01-01 98 2012-01-01 105 2013-01-01 102 2014-01-01 110 2015-01-01 124 2016-01-01 138