Year	Number of Firms
1997-01-01	8
2002-01-01	18
2003-01-01	28
2004-01-01	31
2005-01-01	46
2006-01-01	38
2007-01-01	46
2008-01-01	60
2009-01-01	60
2010-01-01	83
2011-01-01	81
2012-01-01	83
2013-01-01	83
2014-01-01	79
2015-01-01	84
2016-01-01	87