Year	Number of Firms
1992-01-01	207
1997-01-01	254
2002-01-01	273
2003-01-01	265
2004-01-01	249
2005-01-01	245
2006-01-01	266
2007-01-01	306
2008-01-01	305
2009-01-01	285
2010-01-01	259
2011-01-01	278
2012-01-01	273
2013-01-01	290
2014-01-01	285
2015-01-01	261
2016-01-01	238