Year	Number of Firms
1992-01-01	18
1997-01-01	23
2002-01-01	20
2003-01-01	30
2004-01-01	32
2005-01-01	38
2006-01-01	41
2007-01-01	42
2008-01-01	53
2009-01-01	42
2010-01-01	57
2011-01-01	55
2012-01-01	50
2013-01-01	46
2014-01-01	48
2015-01-01	46
2016-01-01	41