Year	Number of Firms
1992-01-01	20
1997-01-01	39
2002-01-01	43
2003-01-01	52
2004-01-01	38
2005-01-01	53
2006-01-01	56
2007-01-01	53
2008-01-01	66
2009-01-01	44
2010-01-01	57
2011-01-01	48
2012-01-01	52
2013-01-01	56
2014-01-01	48
2015-01-01	57
2016-01-01	54