Year	Number of Firms
1992-01-01	13
1997-01-01	16
2002-01-01	15
2003-01-01	12
2004-01-01	5
2005-01-01	10
2006-01-01	24
2007-01-01	20
2008-01-01	25
2009-01-01	32
2010-01-01	41
2011-01-01	35
2012-01-01	38
2013-01-01	35
2014-01-01	48
2015-01-01	30
2016-01-01	33