Year	Number of Firms
1992-01-01	2
1997-01-01	18
2002-01-01	21
2003-01-01	21
2004-01-01	27
2005-01-01	25
2006-01-01	27
2007-01-01	41
2008-01-01	57
2009-01-01	23
2010-01-01	44
2011-01-01	42
2012-01-01	54
2013-01-01	45
2014-01-01	46
2015-01-01	41
2016-01-01	42