Year	Number of Firms
1997-01-01	1
2002-01-01	3
2003-01-01	2
2004-01-01	10
2005-01-01	12
2006-01-01	15
2007-01-01	12
2008-01-01	15
2009-01-01	18
2010-01-01	28
2011-01-01	27
2012-01-01	31
2013-01-01	24
2014-01-01	20
2015-01-01	10
2016-01-01	14