Year	Number of Firms
2004-01-01	4
2005-01-01	12
2006-01-01	35
2007-01-01	49
2008-01-01	93
2009-01-01	121
2010-01-01	128
2011-01-01	50
2012-01-01	120
2013-01-01	144
2014-01-01	125
2015-01-01	61
2016-01-01	40