Year	Number of Firms
1992-01-01	281
1997-01-01	382
2002-01-01	343
2003-01-01	357
2004-01-01	402
2005-01-01	425
2006-01-01	409
2007-01-01	479
2008-01-01	486
2009-01-01	436
2010-01-01	450
2011-01-01	513
2012-01-01	491
2013-01-01	522
2014-01-01	529
2015-01-01	524
2016-01-01	531