Year	Number of Firms
1992-01-01	41
1997-01-01	114
2002-01-01	207
2003-01-01	245
2004-01-01	265
2005-01-01	303
2006-01-01	327
2007-01-01	393
2008-01-01	391
2009-01-01	430
2010-01-01	416
2011-01-01	488
2012-01-01	484
2013-01-01	470
2014-01-01	462
2015-01-01	457
2016-01-01	483