Year	Number of Firms
1992-01-01	4
1997-01-01	6
2002-01-01	14
2003-01-01	14
2004-01-01	19
2005-01-01	14
2006-01-01	16
2007-01-01	19
2008-01-01	35
2009-01-01	41
2010-01-01	42
2011-01-01	39
2012-01-01	63
2013-01-01	55
2014-01-01	47
2015-01-01	56
2016-01-01	62