Year	Number of Firms
1992-01-01	9
1997-01-01	14
2002-01-01	18
2003-01-01	20
2004-01-01	20
2005-01-01	26
2006-01-01	27
2007-01-01	27
2008-01-01	33
2009-01-01	35
2010-01-01	42
2011-01-01	33
2012-01-01	36
2013-01-01	37
2014-01-01	38
2015-01-01	39
2016-01-01	41