Year	Number of Firms
1992-01-01	9
1997-01-01	8
2002-01-01	15
2003-01-01	30
2004-01-01	34
2005-01-01	28
2006-01-01	33
2007-01-01	36
2008-01-01	41
2009-01-01	37
2010-01-01	48
2011-01-01	46
2012-01-01	43
2013-01-01	44
2014-01-01	49
2015-01-01	42
2016-01-01	51