Year	Number of Firms
2004-01-01	3
2005-01-01	9
2006-01-01	16
2007-01-01	28
2008-01-01	37
2009-01-01	47
2010-01-01	49
2011-01-01	13
2012-01-01	27
2013-01-01	35
2014-01-01	25
2015-01-01	8
2016-01-01	2