Year Number of Firms 1992-01-01 5 1997-01-01 11 2002-01-01 22 2003-01-01 30 2004-01-01 19 2005-01-01 31 2006-01-01 42 2007-01-01 49 2008-01-01 41 2009-01-01 52 2010-01-01 66 2011-01-01 68 2012-01-01 75 2013-01-01 76 2014-01-01 65 2015-01-01 67 2016-01-01 68