Year	Number of Firms
1997-01-01	5
2002-01-01	9
2003-01-01	9
2004-01-01	13
2005-01-01	16
2006-01-01	15
2007-01-01	16
2008-01-01	28
2009-01-01	26
2010-01-01	37
2011-01-01	34
2012-01-01	40
2013-01-01	35
2014-01-01	36
2015-01-01	38
2016-01-01	54