Year Number of Firms 1992-01-01 43 1997-01-01 53 2002-01-01 67 2003-01-01 69 2004-01-01 66 2005-01-01 62 2006-01-01 70 2007-01-01 79 2008-01-01 83 2009-01-01 87 2010-01-01 89 2011-01-01 91 2012-01-01 95 2013-01-01 93 2014-01-01 89 2015-01-01 95 2016-01-01 97