Year	Number of Firms
1997-01-01	8
2002-01-01	23
2003-01-01	23
2004-01-01	28
2005-01-01	35
2006-01-01	37
2007-01-01	52
2008-01-01	50
2009-01-01	38
2010-01-01	27
2011-01-01	42
2012-01-01	39
2013-01-01	41
2014-01-01	38
2015-01-01	22
2016-01-01	25