Year	Number of Firms
1992-01-01	297
1997-01-01	407
2002-01-01	447
2003-01-01	494
2004-01-01	508
2005-01-01	553
2006-01-01	552
2007-01-01	549
2008-01-01	619
2009-01-01	557
2010-01-01	586
2011-01-01	598
2012-01-01	621
2013-01-01	604
2014-01-01	622
2015-01-01	624
2016-01-01	653