Year	Number of Firms
1997-01-01	2
2002-01-01	11
2003-01-01	11
2004-01-01	16
2005-01-01	14
2006-01-01	22
2007-01-01	23
2008-01-01	29
2009-01-01	24
2010-01-01	23
2011-01-01	27
2012-01-01	33
2013-01-01	46
2014-01-01	49
2015-01-01	39
2016-01-01	42