Year	Number of Firms
1992-01-01	250
1997-01-01	330
2002-01-01	381
2003-01-01	357
2004-01-01	367
2005-01-01	374
2006-01-01	359
2007-01-01	400
2008-01-01	421
2009-01-01	404
2010-01-01	411
2011-01-01	459
2012-01-01	474
2013-01-01	468
2014-01-01	449
2015-01-01	450
2016-01-01	456