Year	Number of Firms
1992-01-01	403
1997-01-01	468
2002-01-01	428
2003-01-01	463
2004-01-01	459
2005-01-01	471
2006-01-01	479
2007-01-01	507
2008-01-01	539
2009-01-01	447
2010-01-01	456
2011-01-01	528
2012-01-01	532
2013-01-01	500
2014-01-01	466
2015-01-01	458
2016-01-01	428