Year	Number of Firms
1992-01-01	14
1997-01-01	40
2002-01-01	35
2003-01-01	42
2004-01-01	37
2005-01-01	47
2006-01-01	35
2007-01-01	40
2008-01-01	38
2009-01-01	36
2010-01-01	32
2011-01-01	36
2012-01-01	35
2013-01-01	31
2014-01-01	41
2015-01-01	43
2016-01-01	33