Year	Number of Firms
1992-01-01	344
1997-01-01	379
2002-01-01	403
2003-01-01	418
2004-01-01	458
2005-01-01	432
2006-01-01	427
2007-01-01	477
2008-01-01	517
2009-01-01	470
2010-01-01	488
2011-01-01	521
2012-01-01	481
2013-01-01	460
2014-01-01	460
2015-01-01	458
2016-01-01	469