Year	Number of Firms
1997-01-01	3
2002-01-01	7
2003-01-01	10
2004-01-01	16
2005-01-01	14
2006-01-01	12
2007-01-01	16
2008-01-01	19
2009-01-01	20
2010-01-01	19
2011-01-01	25
2012-01-01	26
2013-01-01	23
2014-01-01	21
2015-01-01	37
2016-01-01	23