Year	Number of Firms
1992-01-01	6
1997-01-01	13
2002-01-01	9
2003-01-01	6
2004-01-01	18
2005-01-01	20
2006-01-01	20
2007-01-01	25
2008-01-01	21
2009-01-01	16
2010-01-01	18
2011-01-01	24
2012-01-01	35
2013-01-01	32
2014-01-01	33
2015-01-01	28
2016-01-01	21