Year Number of Firms 1992-01-01 31 1997-01-01 29 2002-01-01 42 2003-01-01 41 2004-01-01 47 2005-01-01 51 2006-01-01 52 2007-01-01 65 2008-01-01 62 2009-01-01 70 2010-01-01 64 2011-01-01 76 2012-01-01 89 2013-01-01 74 2014-01-01 78 2015-01-01 78 2016-01-01 78