Year	Number of Firms
1992-01-01	20
1997-01-01	20
2002-01-01	35
2003-01-01	28
2004-01-01	27
2005-01-01	34
2006-01-01	33
2007-01-01	34
2008-01-01	25
2009-01-01	30
2010-01-01	32
2011-01-01	35
2012-01-01	37
2013-01-01	36
2014-01-01	42
2015-01-01	38
2016-01-01	38