Year	Number of Firms
2004-01-01	26
2005-01-01	137
2006-01-01	224
2007-01-01	292
2008-01-01	354
2009-01-01	420
2010-01-01	453
2011-01-01	145
2012-01-01	264
2013-01-01	354
2014-01-01	268
2015-01-01	105
2016-01-01	71