Year Number of Firms 1992-01-01 11 1997-01-01 21 2002-01-01 12 2003-01-01 12 2004-01-01 17 2005-01-01 15 2006-01-01 24 2007-01-01 22 2008-01-01 30 2009-01-01 32 2010-01-01 26 2011-01-01 33 2012-01-01 38 2013-01-01 48 2014-01-01 45 2015-01-01 36 2016-01-01 38