Year	Number of Firms
2004-01-01	2
2005-01-01	5
2006-01-01	11
2007-01-01	8
2008-01-01	20
2009-01-01	18
2010-01-01	24
2011-01-01	5
2012-01-01	12
2013-01-01	22
2014-01-01	18
2015-01-01	10
2016-01-01	7