Year	Number of Firms
1992-01-01	369
1997-01-01	417
2002-01-01	459
2003-01-01	460
2004-01-01	462
2005-01-01	464
2006-01-01	452
2007-01-01	502
2008-01-01	511
2009-01-01	458
2010-01-01	485
2011-01-01	468
2012-01-01	460
2013-01-01	445
2014-01-01	476
2015-01-01	455
2016-01-01	446