Year	Number of Firms
1992-01-01	141
1997-01-01	219
2002-01-01	254
2003-01-01	275
2004-01-01	314
2005-01-01	320
2006-01-01	354
2007-01-01	388
2008-01-01	399
2009-01-01	414
2010-01-01	456
2011-01-01	474
2012-01-01	506
2013-01-01	534
2014-01-01	505
2015-01-01	465
2016-01-01	484