Year Number of Firms 1992-01-01 34 1997-01-01 25 2002-01-01 40 2003-01-01 32 2004-01-01 34 2005-01-01 41 2006-01-01 35 2007-01-01 65 2008-01-01 70 2009-01-01 62 2010-01-01 58 2011-01-01 64 2012-01-01 69 2013-01-01 57 2014-01-01 63 2015-01-01 63 2016-01-01 61