Year	Number of Firms
1992-01-01	4
1997-01-01	6
2002-01-01	5
2003-01-01	9
2004-01-01	7
2005-01-01	10
2006-01-01	13
2007-01-01	17
2008-01-01	16
2009-01-01	20
2010-01-01	25
2011-01-01	27
2012-01-01	24
2013-01-01	18
2014-01-01	18
2015-01-01	24
2016-01-01	23