Year	Number of Firms
1992-01-01	2
1997-01-01	4
2002-01-01	8
2003-01-01	9
2004-01-01	14
2005-01-01	21
2006-01-01	21
2007-01-01	34
2008-01-01	32
2009-01-01	18
2010-01-01	21
2011-01-01	21
2012-01-01	25
2013-01-01	27
2014-01-01	32
2015-01-01	31
2016-01-01	19