Year	Number of Firms
2004-01-01	3
2005-01-01	10
2006-01-01	10
2007-01-01	20
2008-01-01	28
2009-01-01	31
2010-01-01	43
2011-01-01	12
2012-01-01	27
2013-01-01	38
2014-01-01	24
2015-01-01	13
2016-01-01	10