Year	Number of Firms
1992-01-01	173
1997-01-01	248
2002-01-01	343
2003-01-01	329
2004-01-01	362
2005-01-01	386
2006-01-01	397
2007-01-01	455
2008-01-01	475
2009-01-01	394
2010-01-01	432
2011-01-01	468
2012-01-01	512
2013-01-01	459
2014-01-01	446
2015-01-01	386
2016-01-01	355