Year	Number of Firms
1992-01-01	168
1997-01-01	285
2002-01-01	351
2003-01-01	329
2004-01-01	356
2005-01-01	356
2006-01-01	397
2007-01-01	440
2008-01-01	473
2009-01-01	481
2010-01-01	458
2011-01-01	537
2012-01-01	502
2013-01-01	545
2014-01-01	540
2015-01-01	546
2016-01-01	533