Year	Number of Firms
1992-01-01	70
1997-01-01	143
2002-01-01	201
2003-01-01	235
2004-01-01	256
2005-01-01	355
2006-01-01	377
2007-01-01	443
2008-01-01	505
2009-01-01	389
2010-01-01	433
2011-01-01	402
2012-01-01	452
2013-01-01	421
2014-01-01	470
2015-01-01	459
2016-01-01	448