Year	Number of Firms
1992-01-01	58
1997-01-01	58
2002-01-01	60
2003-01-01	56
2004-01-01	58
2005-01-01	67
2006-01-01	77
2007-01-01	70
2008-01-01	77
2009-01-01	73
2010-01-01	70
2011-01-01	68
2012-01-01	69
2013-01-01	80
2014-01-01	81
2015-01-01	82
2016-01-01	70