Year	Number of Firms
1992-01-01	165
1997-01-01	289
2002-01-01	305
2003-01-01	335
2004-01-01	416
2005-01-01	378
2006-01-01	424
2007-01-01	372
2008-01-01	410
2009-01-01	426
2010-01-01	429
2011-01-01	498
2012-01-01	494
2013-01-01	546
2014-01-01	574
2015-01-01	595
2016-01-01	598