Year Number of Firms 1992-01-01 26 1997-01-01 37 2002-01-01 31 2003-01-01 29 2004-01-01 34 2005-01-01 46 2006-01-01 52 2007-01-01 55 2008-01-01 56 2009-01-01 59 2010-01-01 64 2011-01-01 65 2012-01-01 71 2013-01-01 70 2014-01-01 63 2015-01-01 74 2016-01-01 73