Year	Number of Firms
1992-01-01	28
1997-01-01	9
2002-01-01	11
2003-01-01	21
2004-01-01	17
2005-01-01	15
2006-01-01	9
2007-01-01	8
2008-01-01	11
2009-01-01	9
2010-01-01	10
2011-01-01	9
2012-01-01	9
2013-01-01	11
2014-01-01	12
2015-01-01	11
2016-01-01	8