Year	Number of Firms
1992-01-01	408
1997-01-01	558
2002-01-01	529
2003-01-01	567
2004-01-01	569
2005-01-01	551
2006-01-01	551
2007-01-01	564
2008-01-01	562
2009-01-01	536
2010-01-01	567
2011-01-01	586
2012-01-01	580
2013-01-01	536
2014-01-01	530
2015-01-01	479
2016-01-01	527