Year	Number of Firms
1992-01-01	403
1997-01-01	330
2002-01-01	361
2003-01-01	331
2004-01-01	314
2005-01-01	325
2006-01-01	324
2007-01-01	300
2008-01-01	331
2009-01-01	336
2010-01-01	335
2011-01-01	335
2012-01-01	340
2013-01-01	327
2014-01-01	324
2015-01-01	297
2016-01-01	311