Year	Number of Firms
1992-01-01	15
1997-01-01	14
2002-01-01	13
2003-01-01	10
2004-01-01	8
2005-01-01	6
2006-01-01	8
2007-01-01	8
2008-01-01	8
2009-01-01	9
2010-01-01	7
2011-01-01	8
2012-01-01	10
2013-01-01	6
2014-01-01	8
2015-01-01	9
2016-01-01	9