Year	Number of Firms
2004-01-01	2
2005-01-01	5
2006-01-01	10
2007-01-01	15
2008-01-01	25
2009-01-01	38
2010-01-01	37
2011-01-01	5
2012-01-01	21
2013-01-01	35
2014-01-01	25
2015-01-01	14
2016-01-01	11