Year	Number of Firms
1992-01-01	172
1997-01-01	302
2002-01-01	323
2003-01-01	316
2004-01-01	375
2005-01-01	387
2006-01-01	425
2007-01-01	461
2008-01-01	536
2009-01-01	482
2010-01-01	512
2011-01-01	544
2012-01-01	522
2013-01-01	511
2014-01-01	493
2015-01-01	486
2016-01-01	495