Year	Number of Firms
2004-01-01	2
2005-01-01	7
2006-01-01	16
2007-01-01	32
2008-01-01	45
2009-01-01	48
2010-01-01	47
2011-01-01	14
2012-01-01	46
2013-01-01	48
2014-01-01	34
2015-01-01	13
2016-01-01	21