Year	Number of Firms
2002-01-01	1
2005-01-01	2
2007-01-01	4
2008-01-01	10
2009-01-01	1
2010-01-01	5
2011-01-01	7
2012-01-01	7
2013-01-01	7
2014-01-01	7
2015-01-01	6
2016-01-01	8