Year	Number of Firms
1992-01-01	9
1997-01-01	15
2002-01-01	22
2003-01-01	32
2004-01-01	28
2005-01-01	22
2006-01-01	28
2007-01-01	28
2008-01-01	27
2009-01-01	38
2010-01-01	43
2011-01-01	44
2012-01-01	42
2013-01-01	52
2014-01-01	59
2015-01-01	59
2016-01-01	60