Year	Number of Firms
2002-01-01	2
2003-01-01	5
2004-01-01	6
2005-01-01	9
2006-01-01	9
2007-01-01	14
2008-01-01	9
2009-01-01	2
2010-01-01	2
2011-01-01	2
2012-01-01	1
2016-01-01	1