Year	Number of Firms
1997-01-01	5
2002-01-01	4
2003-01-01	9
2004-01-01	26
2005-01-01	26
2006-01-01	26
2007-01-01	27
2008-01-01	33
2009-01-01	56
2010-01-01	62
2011-01-01	66
2012-01-01	74
2013-01-01	47
2014-01-01	34
2015-01-01	36
2016-01-01	20