Year Number of Firms 1992-01-01 11 1997-01-01 23 2002-01-01 28 2003-01-01 32 2004-01-01 26 2005-01-01 36 2006-01-01 32 2007-01-01 37 2008-01-01 32 2009-01-01 31 2010-01-01 52 2011-01-01 37 2012-01-01 40 2013-01-01 46 2014-01-01 43 2015-01-01 57 2016-01-01 67