Year	Number of Firms
1992-01-01	36
1997-01-01	52
2002-01-01	52
2003-01-01	71
2004-01-01	58
2005-01-01	51
2006-01-01	54
2007-01-01	69
2008-01-01	67
2009-01-01	65
2010-01-01	57
2011-01-01	74
2012-01-01	59
2013-01-01	43
2014-01-01	58
2015-01-01	38
2016-01-01	40