Year Number of Firms 1992-01-01 1 1997-01-01 17 2002-01-01 27 2003-01-01 22 2004-01-01 28 2005-01-01 36 2006-01-01 42 2007-01-01 46 2008-01-01 51 2009-01-01 46 2010-01-01 44 2011-01-01 59 2012-01-01 62 2013-01-01 58 2014-01-01 58 2015-01-01 51 2016-01-01 47