Year Number of Firms 1992-01-01 32 1997-01-01 54 2002-01-01 57 2003-01-01 55 2004-01-01 73 2005-01-01 77 2006-01-01 74 2007-01-01 77 2008-01-01 81 2009-01-01 69 2010-01-01 89 2011-01-01 84 2012-01-01 79 2013-01-01 83 2014-01-01 74 2015-01-01 69 2016-01-01 72