Year	Number of Firms
1997-01-01	8
2002-01-01	5
2003-01-01	6
2004-01-01	5
2005-01-01	4
2006-01-01	6
2007-01-01	8
2008-01-01	8
2009-01-01	6
2010-01-01	14
2011-01-01	16
2012-01-01	12
2013-01-01	10
2014-01-01	11
2015-01-01	12
2016-01-01	19