Year	Number of Firms
2004-01-01	12
2005-01-01	10
2006-01-01	11
2007-01-01	12
2008-01-01	16
2009-01-01	19
2010-01-01	13
2011-01-01	11
2012-01-01	19
2013-01-01	19
2014-01-01	14
2015-01-01	10
2016-01-01	10