Year	Number of Firms
1992-01-01	80
1997-01-01	149
2002-01-01	191
2003-01-01	194
2004-01-01	247
2005-01-01	240
2006-01-01	265
2007-01-01	286
2008-01-01	321
2009-01-01	305
2010-01-01	325
2011-01-01	352
2012-01-01	386
2013-01-01	435
2014-01-01	453
2015-01-01	450
2016-01-01	494