Year	Number of Firms
1997-01-01	15
2002-01-01	18
2003-01-01	13
2004-01-01	13
2005-01-01	7
2006-01-01	7
2007-01-01	10
2008-01-01	15
2009-01-01	10
2010-01-01	8
2011-01-01	9
2012-01-01	9
2013-01-01	10
2014-01-01	10
2015-01-01	11
2016-01-01	8