Year	Number of Firms
1992-01-01	12
1997-01-01	9
2002-01-01	16
2003-01-01	20
2004-01-01	16
2005-01-01	18
2006-01-01	13
2007-01-01	12
2008-01-01	12
2009-01-01	12
2010-01-01	10
2011-01-01	9
2012-01-01	6
2013-01-01	9
2014-01-01	6
2015-01-01	9
2016-01-01	10