Year	Number of Firms
1992-01-01	208
1997-01-01	340
2002-01-01	362
2003-01-01	415
2004-01-01	431
2005-01-01	443
2006-01-01	439
2007-01-01	466
2008-01-01	458
2009-01-01	445
2010-01-01	484
2011-01-01	501
2012-01-01	474
2013-01-01	453
2014-01-01	471
2015-01-01	475
2016-01-01	484