Year	Number of Firms
1997-01-01	3
2002-01-01	14
2003-01-01	9
2004-01-01	9
2005-01-01	16
2006-01-01	18
2007-01-01	21
2008-01-01	25
2009-01-01	24
2010-01-01	33
2011-01-01	33
2012-01-01	30
2013-01-01	44
2014-01-01	42
2015-01-01	32
2016-01-01	34