Year	Number of Firms
1997-01-01	5
2002-01-01	9
2003-01-01	14
2004-01-01	14
2005-01-01	12
2006-01-01	18
2007-01-01	25
2008-01-01	17
2009-01-01	14
2010-01-01	19
2011-01-01	20
2012-01-01	14
2013-01-01	17
2014-01-01	17
2015-01-01	15
2016-01-01	19