Year	Number of Firms
1997-01-01	7
2002-01-01	5
2003-01-01	5
2004-01-01	10
2005-01-01	16
2006-01-01	13
2007-01-01	20
2008-01-01	28
2009-01-01	27
2010-01-01	25
2011-01-01	27
2012-01-01	21
2013-01-01	18
2014-01-01	19
2015-01-01	23
2016-01-01	24