Year Number of Firms 1992-01-01 1 1997-01-01 8 2002-01-01 15 2003-01-01 19 2004-01-01 24 2005-01-01 27 2006-01-01 32 2007-01-01 35 2008-01-01 40 2009-01-01 28 2010-01-01 24 2011-01-01 42 2012-01-01 50 2013-01-01 44 2014-01-01 53 2015-01-01 47 2016-01-01 48