Year	Number of Firms
1992-01-01	4
1997-01-01	10
2002-01-01	4
2003-01-01	8
2004-01-01	8
2005-01-01	11
2006-01-01	16
2007-01-01	19
2008-01-01	16
2009-01-01	14
2010-01-01	11
2011-01-01	14
2012-01-01	16
2013-01-01	20
2014-01-01	14
2015-01-01	18
2016-01-01	20