Year	Number of Firms
1992-01-01	1
1997-01-01	9
2002-01-01	15
2003-01-01	26
2004-01-01	22
2005-01-01	38
2006-01-01	30
2007-01-01	14
2008-01-01	10
2009-01-01	4
2010-01-01	6
2011-01-01	8
2012-01-01	4
2013-01-01	4
2014-01-01	1
2015-01-01	2