Year	Number of Firms
1992-01-01	226
1997-01-01	253
2002-01-01	341
2003-01-01	371
2004-01-01	428
2005-01-01	456
2006-01-01	450
2007-01-01	523
2008-01-01	555
2009-01-01	578
2010-01-01	524
2011-01-01	515
2012-01-01	536
2013-01-01	574
2014-01-01	563
2015-01-01	547
2016-01-01	509