Year	Number of Firms
1992-01-01	4
1997-01-01	8
2002-01-01	9
2003-01-01	14
2004-01-01	18
2005-01-01	21
2006-01-01	20
2007-01-01	25
2008-01-01	34
2009-01-01	39
2010-01-01	40
2011-01-01	36
2012-01-01	30
2013-01-01	44
2014-01-01	39
2015-01-01	52
2016-01-01	47