Year	Number of Firms
2002-01-01	1
2003-01-01	1
2004-01-01	3
2005-01-01	2
2008-01-01	7
2009-01-01	12
2010-01-01	16
2011-01-01	14
2012-01-01	19
2013-01-01	11
2014-01-01	9
2015-01-01	8
2016-01-01	5