Year	Number of Firms
1992-01-01	67
1997-01-01	115
2002-01-01	194
2003-01-01	194
2004-01-01	257
2005-01-01	265
2006-01-01	337
2007-01-01	408
2008-01-01	465
2009-01-01	382
2010-01-01	425
2011-01-01	468
2012-01-01	472
2013-01-01	384
2014-01-01	473
2015-01-01	406
2016-01-01	441