Year	Number of Firms
1992-01-01	111
1997-01-01	231
2002-01-01	292
2003-01-01	329
2004-01-01	335
2005-01-01	337
2006-01-01	323
2007-01-01	327
2008-01-01	345
2009-01-01	327
2010-01-01	316
2011-01-01	315
2012-01-01	326
2013-01-01	316
2014-01-01	341
2015-01-01	321
2016-01-01	351