Year	Number of Firms
1992-01-01	31
1997-01-01	47
2002-01-01	67
2003-01-01	67
2004-01-01	65
2005-01-01	63
2006-01-01	80
2007-01-01	75
2008-01-01	73
2009-01-01	64
2010-01-01	58
2011-01-01	74
2012-01-01	67
2013-01-01	63
2014-01-01	52
2015-01-01	76
2016-01-01	81