Year	Number of Firms
1992-01-01	151
1997-01-01	226
2002-01-01	221
2003-01-01	216
2004-01-01	206
2005-01-01	210
2006-01-01	245
2007-01-01	253
2008-01-01	275
2009-01-01	284
2010-01-01	299
2011-01-01	298
2012-01-01	292
2013-01-01	285
2014-01-01	287
2015-01-01	277
2016-01-01	239