Year	Number of Firms
1997-01-01	4
2002-01-01	9
2003-01-01	13
2004-01-01	8
2005-01-01	10
2006-01-01	18
2007-01-01	16
2008-01-01	26
2009-01-01	15
2010-01-01	22
2011-01-01	19
2012-01-01	22
2013-01-01	27
2014-01-01	27
2015-01-01	29
2016-01-01	22