Year	Number of Firms
1992-01-01	177
1997-01-01	252
2002-01-01	303
2003-01-01	320
2004-01-01	354
2005-01-01	340
2006-01-01	372
2007-01-01	390
2008-01-01	405
2009-01-01	416
2010-01-01	456
2011-01-01	449
2012-01-01	481
2013-01-01	496
2014-01-01	493
2015-01-01	465
2016-01-01	474