Year	Number of Firms
1992-01-01	8
1997-01-01	7
2002-01-01	6
2003-01-01	6
2004-01-01	3
2005-01-01	2
2006-01-01	7
2007-01-01	6
2008-01-01	4
2009-01-01	6
2010-01-01	11
2011-01-01	10
2012-01-01	16
2013-01-01	18
2014-01-01	17
2015-01-01	17
2016-01-01	15