Year	Number of Firms
1992-01-01	177
1997-01-01	277
2002-01-01	268
2003-01-01	286
2004-01-01	323
2005-01-01	386
2006-01-01	397
2007-01-01	459
2008-01-01	547
2009-01-01	435
2010-01-01	471
2011-01-01	439
2012-01-01	461
2013-01-01	443
2014-01-01	465
2015-01-01	433
2016-01-01	405