Year Number of Firms 1992-01-01 3 1997-01-01 3 2002-01-01 15 2003-01-01 19 2004-01-01 26 2005-01-01 25 2006-01-01 21 2007-01-01 21 2008-01-01 25 2009-01-01 33 2010-01-01 42 2011-01-01 56 2012-01-01 49 2013-01-01 54 2014-01-01 57 2015-01-01 47 2016-01-01 34