Year Number of Firms 1992-01-01 7 1997-01-01 5 2002-01-01 20 2003-01-01 12 2004-01-01 12 2005-01-01 12 2006-01-01 23 2007-01-01 23 2008-01-01 29 2009-01-01 24 2010-01-01 41 2011-01-01 47 2012-01-01 44 2013-01-01 44 2014-01-01 56 2015-01-01 36 2016-01-01 39