Year	Number of Firms
1997-01-01	3
2002-01-01	12
2003-01-01	8
2004-01-01	20
2005-01-01	13
2006-01-01	19
2007-01-01	33
2008-01-01	31
2009-01-01	24
2010-01-01	28
2011-01-01	27
2012-01-01	34
2013-01-01	29
2014-01-01	26
2015-01-01	35
2016-01-01	25