Year	Number of Firms
1992-01-01	16
1997-01-01	36
2002-01-01	28
2003-01-01	27
2004-01-01	28
2005-01-01	32
2006-01-01	23
2007-01-01	37
2008-01-01	38
2009-01-01	31
2010-01-01	36
2011-01-01	39
2012-01-01	41
2013-01-01	39
2014-01-01	42
2015-01-01	40
2016-01-01	47