Year	Number of Firms
1997-01-01	4
2002-01-01	5
2003-01-01	12
2004-01-01	21
2005-01-01	23
2006-01-01	30
2007-01-01	27
2008-01-01	31
2009-01-01	53
2010-01-01	73
2011-01-01	54
2012-01-01	63
2013-01-01	52
2014-01-01	37
2015-01-01	27
2016-01-01	22