Year	Number of Firms
1992-01-01	9
1997-01-01	2
2002-01-01	6
2003-01-01	4
2004-01-01	4
2005-01-01	6
2006-01-01	11
2007-01-01	6
2008-01-01	16
2009-01-01	15
2010-01-01	18
2011-01-01	26
2012-01-01	21
2013-01-01	20
2014-01-01	20
2015-01-01	20
2016-01-01	16