Year	Number of Firms
1992-01-01	168
1997-01-01	277
2002-01-01	329
2003-01-01	346
2004-01-01	372
2005-01-01	380
2006-01-01	383
2007-01-01	415
2008-01-01	432
2009-01-01	412
2010-01-01	444
2011-01-01	473
2012-01-01	453
2013-01-01	463
2014-01-01	470
2015-01-01	481
2016-01-01	468