Year	Number of Firms
1992-01-01	4
1997-01-01	13
2002-01-01	8
2003-01-01	4
2004-01-01	11
2005-01-01	9
2006-01-01	9
2007-01-01	17
2008-01-01	13
2009-01-01	13
2010-01-01	26
2011-01-01	17
2012-01-01	21
2013-01-01	25
2014-01-01	17
2015-01-01	25
2016-01-01	30