Year Number of Firms 1992-01-01 24 1997-01-01 29 2002-01-01 38 2003-01-01 34 2004-01-01 53 2005-01-01 55 2006-01-01 50 2007-01-01 60 2008-01-01 55 2009-01-01 37 2010-01-01 48 2011-01-01 34 2012-01-01 41 2013-01-01 39 2014-01-01 48 2015-01-01 43 2016-01-01 46