Year	Number of Firms
1992-01-01	22
1997-01-01	27
2002-01-01	27
2003-01-01	28
2004-01-01	34
2005-01-01	32
2006-01-01	41
2007-01-01	41
2008-01-01	44
2009-01-01	48
2010-01-01	51
2011-01-01	52
2012-01-01	58
2013-01-01	54
2014-01-01	57
2015-01-01	57
2016-01-01	64