Year	Number of Firms
1992-01-01	14
1997-01-01	17
2002-01-01	15
2003-01-01	20
2004-01-01	13
2005-01-01	16
2006-01-01	17
2007-01-01	15
2008-01-01	18
2009-01-01	14
2010-01-01	15
2011-01-01	7
2012-01-01	10
2013-01-01	8
2014-01-01	10
2015-01-01	4
2016-01-01	5