Year	Number of Firms
1992-01-01	236
1997-01-01	317
2002-01-01	313
2003-01-01	381
2004-01-01	383
2005-01-01	404
2006-01-01	406
2007-01-01	471
2008-01-01	509
2009-01-01	421
2010-01-01	455
2011-01-01	458
2012-01-01	446
2013-01-01	429
2014-01-01	446
2015-01-01	442
2016-01-01	469