Year Number of Firms 1992-01-01 9 1997-01-01 8 2002-01-01 10 2003-01-01 11 2004-01-01 16 2005-01-01 14 2006-01-01 17 2007-01-01 22 2008-01-01 29 2009-01-01 26 2010-01-01 25 2011-01-01 29 2012-01-01 28 2013-01-01 33 2014-01-01 31 2015-01-01 41 2016-01-01 41