Year	Number of Firms
1992-01-01	287
1997-01-01	429
2002-01-01	441
2003-01-01	452
2004-01-01	443
2005-01-01	512
2006-01-01	503
2007-01-01	483
2008-01-01	525
2009-01-01	514
2010-01-01	531
2011-01-01	564
2012-01-01	571
2013-01-01	571
2014-01-01	567
2015-01-01	555
2016-01-01	539