Year Number of Firms 1992-01-01 10 1997-01-01 19 2002-01-01 20 2003-01-01 15 2004-01-01 24 2005-01-01 27 2006-01-01 22 2007-01-01 32 2008-01-01 35 2009-01-01 33 2010-01-01 38 2011-01-01 31 2012-01-01 57 2013-01-01 46 2014-01-01 55 2015-01-01 52 2016-01-01 52