Year	Number of Firms
1997-01-01	1
2006-01-01	1
2007-01-01	2
2008-01-01	26
2009-01-01	41
2010-01-01	59
2011-01-01	40
2012-01-01	41
2013-01-01	33
2014-01-01	30
2015-01-01	31
2016-01-01	8