Year	Number of Firms
1992-01-01	113
1997-01-01	210
2002-01-01	267
2003-01-01	283
2004-01-01	280
2005-01-01	281
2006-01-01	335
2007-01-01	359
2008-01-01	354
2009-01-01	351
2010-01-01	377
2011-01-01	404
2012-01-01	464
2013-01-01	476
2014-01-01	488
2015-01-01	506
2016-01-01	498