Year	Number of Firms
1997-01-01	7
2002-01-01	18
2003-01-01	15
2004-01-01	26
2005-01-01	28
2006-01-01	37
2007-01-01	40
2008-01-01	40
2009-01-01	34
2010-01-01	48
2011-01-01	91
2012-01-01	96
2013-01-01	70
2014-01-01	63
2015-01-01	58
2016-01-01	61