Year	Number of Firms
2002-01-01	7
2003-01-01	4
2004-01-01	7
2005-01-01	7
2006-01-01	12
2007-01-01	12
2008-01-01	14
2009-01-01	20
2010-01-01	18
2011-01-01	16
2012-01-01	17
2013-01-01	12
2014-01-01	15
2015-01-01	16
2016-01-01	11