Year	Number of Firms
1992-01-01	168
1997-01-01	276
2002-01-01	271
2003-01-01	276
2004-01-01	307
2005-01-01	287
2006-01-01	295
2007-01-01	341
2008-01-01	337
2009-01-01	330
2010-01-01	335
2011-01-01	333
2012-01-01	326
2013-01-01	355
2014-01-01	329
2015-01-01	377
2016-01-01	353