Year	Number of Firms
1992-01-01	30
1997-01-01	64
2002-01-01	48
2003-01-01	50
2004-01-01	42
2005-01-01	41
2006-01-01	37
2007-01-01	38
2008-01-01	43
2009-01-01	31
2010-01-01	27
2011-01-01	27
2012-01-01	31
2013-01-01	30
2014-01-01	30
2015-01-01	27
2016-01-01	35