Year	Number of Firms
1992-01-01	1
1997-01-01	3
2002-01-01	2
2003-01-01	4
2004-01-01	3
2005-01-01	2
2006-01-01	4
2007-01-01	5
2008-01-01	5
2009-01-01	12
2010-01-01	4
2011-01-01	12
2012-01-01	10
2013-01-01	15
2014-01-01	11
2015-01-01	17
2016-01-01	18