Year	Number of Firms
1992-01-01	180
1997-01-01	317
2002-01-01	341
2003-01-01	361
2004-01-01	402
2005-01-01	384
2006-01-01	404
2007-01-01	418
2008-01-01	429
2009-01-01	394
2010-01-01	435
2011-01-01	468
2012-01-01	494
2013-01-01	491
2014-01-01	479
2015-01-01	442
2016-01-01	476