Year	Number of Firms
1992-01-01	2
1997-01-01	3
2002-01-01	4
2003-01-01	2
2004-01-01	3
2005-01-01	2
2006-01-01	4
2007-01-01	8
2008-01-01	8
2009-01-01	11
2010-01-01	13
2011-01-01	15
2012-01-01	16
2013-01-01	14
2014-01-01	16
2015-01-01	11
2016-01-01	11