Year	Number of Firms
1992-01-01	345
1997-01-01	488
2002-01-01	320
2003-01-01	405
2004-01-01	463
2005-01-01	456
2006-01-01	469
2007-01-01	545
2008-01-01	591
2009-01-01	545
2010-01-01	569
2011-01-01	587
2012-01-01	521
2013-01-01	489
2014-01-01	447
2015-01-01	440
2016-01-01	470