Year	Number of Firms
1992-01-01	5
1997-01-01	13
2002-01-01	9
2003-01-01	9
2004-01-01	8
2005-01-01	6
2006-01-01	8
2007-01-01	15
2008-01-01	18
2009-01-01	17
2010-01-01	15
2011-01-01	17
2012-01-01	14
2013-01-01	24
2014-01-01	20
2015-01-01	16
2016-01-01	17