Year	Number of Firms
1992-01-01	314
1997-01-01	425
2002-01-01	471
2003-01-01	483
2004-01-01	488
2005-01-01	511
2006-01-01	500
2007-01-01	555
2008-01-01	559
2009-01-01	519
2010-01-01	524
2011-01-01	570
2012-01-01	534
2013-01-01	531
2014-01-01	568
2015-01-01	541
2016-01-01	581