Year	Number of Firms
1992-01-01	372
1997-01-01	450
2002-01-01	475
2003-01-01	458
2004-01-01	492
2005-01-01	490
2006-01-01	517
2007-01-01	562
2008-01-01	604
2009-01-01	567
2010-01-01	595
2011-01-01	617
2012-01-01	606
2013-01-01	594
2014-01-01	611
2015-01-01	617
2016-01-01	591