Year	Number of Firms
1992-01-01	353
1997-01-01	405
2002-01-01	446
2003-01-01	464
2004-01-01	478
2005-01-01	501
2006-01-01	497
2007-01-01	493
2008-01-01	519
2009-01-01	512
2010-01-01	565
2011-01-01	577
2012-01-01	574
2013-01-01	573
2014-01-01	598
2015-01-01	586
2016-01-01	561