Year Number of Firms 1992-01-01 6 1997-01-01 7 2002-01-01 17 2003-01-01 14 2004-01-01 13 2005-01-01 24 2006-01-01 26 2007-01-01 29 2008-01-01 28 2009-01-01 23 2010-01-01 28 2011-01-01 36 2012-01-01 39 2013-01-01 29 2014-01-01 29 2015-01-01 37 2016-01-01 32