Year Number of Firms 1992-01-01 5 1997-01-01 4 2002-01-01 5 2003-01-01 9 2004-01-01 11 2005-01-01 16 2006-01-01 13 2007-01-01 19 2008-01-01 19 2009-01-01 21 2010-01-01 21 2011-01-01 17 2012-01-01 16 2013-01-01 18 2014-01-01 19 2015-01-01 19 2016-01-01 24