Year Number of Firms 1992-01-01 13 1997-01-01 8 2002-01-01 19 2003-01-01 27 2004-01-01 27 2005-01-01 30 2006-01-01 35 2007-01-01 33 2008-01-01 39 2009-01-01 26 2010-01-01 29 2011-01-01 30 2012-01-01 32 2013-01-01 27 2014-01-01 35 2015-01-01 40 2016-01-01 41