Year	Number of Firms
1992-01-01	8
1997-01-01	9
2002-01-01	8
2003-01-01	9
2004-01-01	11
2005-01-01	11
2006-01-01	13
2007-01-01	13
2008-01-01	15
2009-01-01	16
2010-01-01	13
2011-01-01	25
2012-01-01	25
2013-01-01	20
2014-01-01	23
2015-01-01	18
2016-01-01	17