Year	Number of Firms
1992-01-01	15
1997-01-01	28
2002-01-01	52
2003-01-01	47
2004-01-01	58
2005-01-01	58
2006-01-01	46
2007-01-01	50
2008-01-01	53
2009-01-01	51
2010-01-01	45
2011-01-01	43
2012-01-01	40
2013-01-01	40
2014-01-01	39
2015-01-01	57
2016-01-01	41