Year Number of Firms 1992-01-01 6 1997-01-01 10 2002-01-01 11 2003-01-01 19 2004-01-01 20 2005-01-01 31 2006-01-01 26 2007-01-01 41 2008-01-01 55 2009-01-01 53 2010-01-01 54 2011-01-01 73 2012-01-01 73 2013-01-01 64 2014-01-01 55 2015-01-01 47 2016-01-01 38