Year	Number of Firms
1992-01-01	2
1997-01-01	5
2002-01-01	5
2003-01-01	5
2004-01-01	6
2005-01-01	8
2006-01-01	10
2007-01-01	9
2008-01-01	13
2009-01-01	16
2010-01-01	19
2011-01-01	14
2012-01-01	21
2013-01-01	15
2014-01-01	23
2015-01-01	19
2016-01-01	19