Year	Number of Firms
1992-01-01	9
1997-01-01	13
2002-01-01	9
2003-01-01	19
2004-01-01	12
2005-01-01	2
2006-01-01	2
2007-01-01	2
2008-01-01	3
2009-01-01	3
2010-01-01	5
2011-01-01	2
2013-01-01	1
2014-01-01	1
2016-01-01	1