Year	Number of Firms
1992-01-01	174
1997-01-01	256
2002-01-01	308
2003-01-01	345
2004-01-01	371
2005-01-01	420
2006-01-01	435
2007-01-01	469
2008-01-01	603
2009-01-01	407
2010-01-01	474
2011-01-01	561
2012-01-01	535
2013-01-01	538
2014-01-01	508
2015-01-01	366
2016-01-01	330