Year	Number of Firms
2005-01-01	2
2006-01-01	7
2007-01-01	11
2008-01-01	13
2009-01-01	17
2010-01-01	15
2011-01-01	6
2012-01-01	14
2013-01-01	21
2014-01-01	23
2015-01-01	10
2016-01-01	13