Year	Number of Firms
1992-01-01	54
1997-01-01	123
2002-01-01	147
2003-01-01	184
2004-01-01	230
2005-01-01	233
2006-01-01	304
2007-01-01	355
2008-01-01	470
2009-01-01	353
2010-01-01	383
2011-01-01	423
2012-01-01	454
2013-01-01	472
2014-01-01	495
2015-01-01	494
2016-01-01	508