Year	Number of Firms
1997-01-01	1
2002-01-01	2
2003-01-01	8
2004-01-01	30
2005-01-01	28
2006-01-01	28
2007-01-01	30
2008-01-01	40
2009-01-01	37
2010-01-01	30
2011-01-01	35
2012-01-01	30
2013-01-01	37
2014-01-01	46
2015-01-01	49
2016-01-01	58