Year	Number of Firms
1992-01-01	21
1997-01-01	25
2002-01-01	37
2003-01-01	29
2004-01-01	38
2005-01-01	27
2006-01-01	39
2007-01-01	41
2008-01-01	40
2009-01-01	39
2010-01-01	44
2011-01-01	38
2012-01-01	32
2013-01-01	24
2014-01-01	38
2015-01-01	24
2016-01-01	28