Year	Number of Firms
1992-01-01	3
1997-01-01	21
2002-01-01	18
2003-01-01	20
2004-01-01	14
2005-01-01	19
2006-01-01	18
2007-01-01	22
2008-01-01	19
2009-01-01	28
2010-01-01	38
2011-01-01	33
2012-01-01	37
2013-01-01	32
2014-01-01	42
2015-01-01	38
2016-01-01	41