Year	Number of Firms
2002-01-01	7
2003-01-01	5
2004-01-01	11
2005-01-01	7
2006-01-01	6
2007-01-01	15
2008-01-01	16
2009-01-01	6
2010-01-01	6
2011-01-01	4
2013-01-01	2
2014-01-01	2
2015-01-01	1
2016-01-01	4