Year	Number of Firms
2005-01-01	2
2006-01-01	5
2007-01-01	10
2008-01-01	13
2009-01-01	18
2010-01-01	13
2011-01-01	5
2012-01-01	8
2013-01-01	16
2014-01-01	20
2015-01-01	9
2016-01-01	11