Year	Number of Firms
1992-01-01	15
1997-01-01	9
2002-01-01	18
2003-01-01	23
2004-01-01	24
2005-01-01	19
2006-01-01	20
2007-01-01	29
2008-01-01	19
2009-01-01	14
2010-01-01	6
2011-01-01	16
2012-01-01	4
2013-01-01	5
2014-01-01	8
2015-01-01	4
2016-01-01	2