Year	Number of Firms
1992-01-01	9
1997-01-01	15
2002-01-01	15
2003-01-01	18
2004-01-01	17
2005-01-01	22
2006-01-01	16
2007-01-01	18
2008-01-01	20
2009-01-01	17
2010-01-01	15
2011-01-01	18
2012-01-01	18
2013-01-01	27
2014-01-01	18
2015-01-01	20
2016-01-01	26