Year	Number of Firms
1992-01-01	109
1997-01-01	198
2002-01-01	253
2003-01-01	262
2004-01-01	254
2005-01-01	354
2006-01-01	364
2007-01-01	396
2008-01-01	387
2009-01-01	423
2010-01-01	491
2011-01-01	533
2012-01-01	492
2013-01-01	489
2014-01-01	503
2015-01-01	553
2016-01-01	587