Year Number of Firms 1992-01-01 10 1997-01-01 22 2002-01-01 30 2003-01-01 29 2004-01-01 30 2005-01-01 41 2006-01-01 45 2007-01-01 55 2008-01-01 59 2009-01-01 59 2010-01-01 65 2011-01-01 64 2012-01-01 67 2013-01-01 53 2014-01-01 58 2015-01-01 67 2016-01-01 51