Year	Number of Firms
1992-01-01	245
1997-01-01	364
2002-01-01	350
2003-01-01	376
2004-01-01	389
2005-01-01	401
2006-01-01	407
2007-01-01	460
2008-01-01	464
2009-01-01	426
2010-01-01	481
2011-01-01	537
2012-01-01	528
2013-01-01	521
2014-01-01	521
2015-01-01	465
2016-01-01	452