Year Number of Firms 1992-01-01 7 1997-01-01 11 2002-01-01 20 2003-01-01 19 2004-01-01 18 2005-01-01 29 2006-01-01 38 2007-01-01 46 2008-01-01 44 2009-01-01 50 2010-01-01 50 2011-01-01 47 2012-01-01 49 2013-01-01 42 2014-01-01 52 2015-01-01 65 2016-01-01 55