Year	Number of Firms
1992-01-01	20
1997-01-01	20
2002-01-01	29
2003-01-01	37
2004-01-01	42
2005-01-01	33
2006-01-01	38
2007-01-01	42
2008-01-01	50
2009-01-01	48
2010-01-01	41
2011-01-01	34
2012-01-01	36
2013-01-01	39
2014-01-01	47
2015-01-01	30
2016-01-01	39