Year	Number of Firms
1992-01-01	4
1997-01-01	10
2002-01-01	9
2003-01-01	9
2004-01-01	8
2005-01-01	17
2006-01-01	16
2007-01-01	14
2008-01-01	24
2009-01-01	12
2010-01-01	19
2011-01-01	27
2012-01-01	33
2013-01-01	36
2014-01-01	36
2015-01-01	17
2016-01-01	19