Year	Number of Firms
1997-01-01	1
2002-01-01	6
2003-01-01	5
2004-01-01	8
2005-01-01	7
2006-01-01	8
2007-01-01	7
2008-01-01	15
2009-01-01	14
2010-01-01	13
2011-01-01	20
2012-01-01	30
2013-01-01	18
2014-01-01	13
2015-01-01	15
2016-01-01	15