Year	Number of Firms
2004-01-01	2
2005-01-01	5
2006-01-01	9
2007-01-01	13
2008-01-01	21
2009-01-01	15
2010-01-01	27
2011-01-01	9
2012-01-01	18
2013-01-01	26
2014-01-01	20
2015-01-01	7
2016-01-01	8