Year	Number of Firms
1997-01-01	31
2002-01-01	95
2003-01-01	111
2004-01-01	137
2005-01-01	183
2006-01-01	187
2007-01-01	240
2008-01-01	256
2009-01-01	335
2010-01-01	356
2011-01-01	387
2012-01-01	367
2013-01-01	395
2014-01-01	403
2015-01-01	450
2016-01-01	466