Year	Number of Firms
1992-01-01	18
1997-01-01	32
2002-01-01	31
2003-01-01	40
2004-01-01	39
2005-01-01	40
2006-01-01	42
2007-01-01	40
2008-01-01	49
2009-01-01	48
2010-01-01	53
2011-01-01	49
2012-01-01	47
2013-01-01	46
2014-01-01	58
2015-01-01	41
2016-01-01	56