Year	Number of Firms
2002-01-01	1
2003-01-01	3
2005-01-01	1
2006-01-01	3
2007-01-01	1
2008-01-01	3
2010-01-01	1
2011-01-01	1
2012-01-01	4
2013-01-01	9
2014-01-01	14
2015-01-01	18
2016-01-01	20