Year Number of Firms 1992-01-01 10 1997-01-01 18 2002-01-01 11 2003-01-01 12 2004-01-01 18 2005-01-01 26 2006-01-01 15 2007-01-01 23 2008-01-01 19 2009-01-01 25 2010-01-01 23 2011-01-01 25 2012-01-01 30 2013-01-01 22 2014-01-01 21 2015-01-01 28 2016-01-01 26