Year	Number of Firms
1992-01-01	428
1997-01-01	478
2002-01-01	466
2003-01-01	315
2004-01-01	416
2005-01-01	462
2006-01-01	508
2007-01-01	486
2008-01-01	482
2009-01-01	450
2010-01-01	429
2011-01-01	437
2012-01-01	423
2013-01-01	354
2014-01-01	320
2015-01-01	227
2016-01-01	164