Year	Number of Firms
1997-01-01	1
2002-01-01	2
2003-01-01	2
2005-01-01	1
2006-01-01	2
2007-01-01	17
2008-01-01	24
2009-01-01	21
2010-01-01	6
2011-01-01	4
2012-01-01	7
2013-01-01	11
2014-01-01	9
2015-01-01	7
2016-01-01	2