Year Number of Firms 1992-01-01 12 1997-01-01 22 2002-01-01 16 2003-01-01 25 2004-01-01 26 2005-01-01 31 2006-01-01 34 2007-01-01 36 2008-01-01 40 2009-01-01 44 2010-01-01 44 2011-01-01 54 2012-01-01 48 2013-01-01 57 2014-01-01 57 2015-01-01 46 2016-01-01 52