Year	Number of Firms
1997-01-01	1
2003-01-01	6
2004-01-01	3
2005-01-01	9
2006-01-01	9
2007-01-01	12
2008-01-01	13
2009-01-01	25
2010-01-01	39
2011-01-01	31
2012-01-01	28
2013-01-01	35
2014-01-01	34
2015-01-01	23
2016-01-01	24