Year	Number of Firms
1997-01-01	7
2002-01-01	8
2003-01-01	9
2004-01-01	16
2005-01-01	13
2006-01-01	15
2007-01-01	16
2008-01-01	24
2009-01-01	21
2010-01-01	27
2011-01-01	21
2012-01-01	26
2013-01-01	34
2014-01-01	22
2015-01-01	19
2016-01-01	25