Year	Number of Firms
2005-01-01	1
2006-01-01	3
2007-01-01	1
2009-01-01	5
2010-01-01	9
2011-01-01	8
2012-01-01	4
2013-01-01	4
2014-01-01	2
2015-01-01	2
2016-01-01	2