Year	Number of Firms
1992-01-01	293
1997-01-01	337
2002-01-01	333
2003-01-01	322
2004-01-01	322
2005-01-01	315
2006-01-01	326
2007-01-01	347
2008-01-01	368
2009-01-01	328
2010-01-01	374
2011-01-01	340
2012-01-01	358
2013-01-01	356
2014-01-01	354
2015-01-01	352
2016-01-01	377