Year	Number of Firms
1992-01-01	363
1997-01-01	474
2002-01-01	469
2003-01-01	484
2004-01-01	482
2005-01-01	480
2006-01-01	487
2007-01-01	541
2008-01-01	574
2009-01-01	527
2010-01-01	519
2011-01-01	553
2012-01-01	538
2013-01-01	556
2014-01-01	541
2015-01-01	521
2016-01-01	540