Year	Number of Firms
1992-01-01	4
1997-01-01	16
2002-01-01	26
2003-01-01	20
2004-01-01	33
2005-01-01	30
2006-01-01	35
2007-01-01	46
2008-01-01	50
2009-01-01	38
2010-01-01	39
2011-01-01	44
2012-01-01	43
2013-01-01	42
2014-01-01	39
2015-01-01	37
2016-01-01	39