Year	Number of Firms
1992-01-01	9
1997-01-01	18
2002-01-01	31
2003-01-01	32
2004-01-01	23
2005-01-01	4
2006-01-01	4
2007-01-01	6
2008-01-01	5
2009-01-01	3
2010-01-01	11
2011-01-01	8
2012-01-01	3
2013-01-01	2
2015-01-01	1
2016-01-01	2