Year	Number of Firms
2003-01-01	1
2005-01-01	2
2006-01-01	2
2007-01-01	1
2008-01-01	3
2010-01-01	1
2011-01-01	3
2012-01-01	3
2013-01-01	5
2014-01-01	7
2015-01-01	5
2016-01-01	3