Year	Number of Firms
1997-01-01	1
2002-01-01	5
2003-01-01	5
2004-01-01	5
2005-01-01	6
2006-01-01	9
2007-01-01	2
2008-01-01	7
2009-01-01	9
2010-01-01	9
2011-01-01	12
2012-01-01	8
2013-01-01	5
2014-01-01	7
2015-01-01	13
2016-01-01	12