Year	Number of Firms
1992-01-01	320
1997-01-01	436
2002-01-01	336
2003-01-01	374
2004-01-01	417
2005-01-01	416
2006-01-01	416
2007-01-01	427
2008-01-01	456
2009-01-01	419
2010-01-01	464
2011-01-01	465
2012-01-01	436
2013-01-01	437
2014-01-01	401
2015-01-01	378
2016-01-01	352