Year	Number of Firms
1992-01-01	132
1997-01-01	217
2002-01-01	226
2003-01-01	235
2004-01-01	235
2005-01-01	274
2006-01-01	282
2007-01-01	317
2008-01-01	321
2009-01-01	303
2010-01-01	351
2011-01-01	360
2012-01-01	337
2013-01-01	338
2014-01-01	356
2015-01-01	320
2016-01-01	351