Year	Number of Firms
1992-01-01	9
1997-01-01	7
2002-01-01	34
2003-01-01	38
2004-01-01	43
2005-01-01	47
2006-01-01	37
2007-01-01	30
2008-01-01	33
2009-01-01	28
2010-01-01	23
2011-01-01	14
2012-01-01	14
2013-01-01	8
2014-01-01	9
2015-01-01	6
2016-01-01	4