Year	Number of Firms
1997-01-01	1
2004-01-01	1
2006-01-01	3
2007-01-01	3
2008-01-01	3
2009-01-01	7
2010-01-01	10
2011-01-01	14
2012-01-01	9
2013-01-01	3
2014-01-01	5
2015-01-01	2
2016-01-01	6