Year	Number of Firms
1992-01-01	20
1997-01-01	38
2002-01-01	9
2003-01-01	18
2004-01-01	18
2005-01-01	14
2006-01-01	15
2007-01-01	18
2008-01-01	19
2009-01-01	17
2010-01-01	16
2011-01-01	23
2012-01-01	30
2013-01-01	26
2014-01-01	20
2015-01-01	20
2016-01-01	19