Year	Number of Firms
1992-01-01	20
1997-01-01	42
2002-01-01	32
2003-01-01	37
2004-01-01	36
2005-01-01	37
2006-01-01	36
2007-01-01	38
2008-01-01	42
2009-01-01	39
2010-01-01	45
2011-01-01	45
2012-01-01	37
2013-01-01	41
2014-01-01	45
2015-01-01	50
2016-01-01	56