Year	Number of Firms
1992-01-01	214
1997-01-01	334
2002-01-01	363
2003-01-01	376
2004-01-01	362
2005-01-01	370
2006-01-01	397
2007-01-01	427
2008-01-01	442
2009-01-01	420
2010-01-01	468
2011-01-01	446
2012-01-01	414
2013-01-01	447
2014-01-01	447
2015-01-01	415
2016-01-01	452