Year	Number of Firms
1992-01-01	230
1997-01-01	301
2002-01-01	337
2003-01-01	332
2004-01-01	332
2005-01-01	332
2006-01-01	336
2007-01-01	320
2008-01-01	339
2009-01-01	329
2010-01-01	362
2011-01-01	353
2012-01-01	356
2013-01-01	335
2014-01-01	373
2015-01-01	373
2016-01-01	367