Year	Number of Firms
1992-01-01	294
1997-01-01	428
2002-01-01	423
2003-01-01	449
2004-01-01	439
2005-01-01	461
2006-01-01	504
2007-01-01	517
2008-01-01	565
2009-01-01	556
2010-01-01	583
2011-01-01	607
2012-01-01	607
2013-01-01	592
2014-01-01	595
2015-01-01	594
2016-01-01	568