Year	Number of Firms
1992-01-01	457
1997-01-01	588
2002-01-01	599
2003-01-01	559
2004-01-01	548
2005-01-01	545
2006-01-01	535
2007-01-01	565
2008-01-01	553
2009-01-01	515
2010-01-01	578
2011-01-01	586
2012-01-01	605
2013-01-01	592
2014-01-01	632
2015-01-01	631
2016-01-01	651