Year	Number of Firms
1992-01-01	251
1997-01-01	411
2002-01-01	459
2003-01-01	458
2004-01-01	464
2005-01-01	494
2006-01-01	521
2007-01-01	535
2008-01-01	614
2009-01-01	586
2010-01-01	628
2011-01-01	707
2012-01-01	674
2013-01-01	693
2014-01-01	670
2015-01-01	658
2016-01-01	599