Year	Number of Firms
1992-01-01	51
1997-01-01	96
2002-01-01	208
2003-01-01	231
2004-01-01	283
2005-01-01	286
2006-01-01	355
2007-01-01	416
2008-01-01	406
2009-01-01	430
2010-01-01	415
2011-01-01	435
2012-01-01	450
2013-01-01	465
2014-01-01	470
2015-01-01	431
2016-01-01	482