Year	Number of Firms
1992-01-01	194
1997-01-01	332
2002-01-01	466
2003-01-01	472
2004-01-01	452
2005-01-01	424
2006-01-01	429
2007-01-01	479
2008-01-01	514
2009-01-01	411
2010-01-01	427
2011-01-01	397
2012-01-01	399
2013-01-01	415
2014-01-01	418
2015-01-01	396
2016-01-01	382