Year Number of Firms 1992-01-01 1 1997-01-01 3 2002-01-01 7 2003-01-01 8 2004-01-01 8 2005-01-01 13 2006-01-01 12 2007-01-01 12 2008-01-01 23 2009-01-01 19 2010-01-01 21 2011-01-01 25 2012-01-01 23 2013-01-01 28 2014-01-01 37 2015-01-01 31 2016-01-01 35