Year	Number of Firms
1992-01-01	4
1997-01-01	6
2002-01-01	9
2003-01-01	10
2004-01-01	10
2005-01-01	13
2006-01-01	10
2007-01-01	9
2008-01-01	9
2009-01-01	16
2010-01-01	13
2011-01-01	22
2012-01-01	15
2013-01-01	14
2014-01-01	14
2015-01-01	20
2016-01-01	18