Year	Number of Firms
1992-01-01	4
1997-01-01	2
2002-01-01	5
2003-01-01	2
2004-01-01	5
2005-01-01	8
2006-01-01	6
2007-01-01	12
2008-01-01	27
2009-01-01	23
2010-01-01	39
2011-01-01	30
2012-01-01	28
2013-01-01	20
2014-01-01	23
2015-01-01	25
2016-01-01	21