Year	Number of Firms
1992-01-01	166
1997-01-01	241
2002-01-01	253
2003-01-01	238
2004-01-01	224
2005-01-01	210
2006-01-01	224
2007-01-01	273
2008-01-01	312
2009-01-01	287
2010-01-01	283
2011-01-01	277
2012-01-01	285
2013-01-01	283
2014-01-01	278
2015-01-01	266
2016-01-01	269