Year	Number of Firms
1992-01-01	134
1997-01-01	224
2002-01-01	265
2003-01-01	285
2004-01-01	324
2005-01-01	317
2006-01-01	346
2007-01-01	395
2008-01-01	457
2009-01-01	429
2010-01-01	452
2011-01-01	443
2012-01-01	454
2013-01-01	455
2014-01-01	443
2015-01-01	422
2016-01-01	390