Year Number of Firms 1992-01-01 24 1997-01-01 31 2002-01-01 43 2003-01-01 45 2004-01-01 58 2005-01-01 53 2006-01-01 47 2007-01-01 54 2008-01-01 55 2009-01-01 48 2010-01-01 54 2011-01-01 56 2012-01-01 63 2013-01-01 56 2014-01-01 66 2015-01-01 61 2016-01-01 70