Year	Number of Firms
1992-01-01	133
1997-01-01	192
2002-01-01	215
2003-01-01	254
2004-01-01	249
2005-01-01	305
2006-01-01	326
2007-01-01	403
2008-01-01	467
2009-01-01	457
2010-01-01	509
2011-01-01	529
2012-01-01	514
2013-01-01	496
2014-01-01	539
2015-01-01	517
2016-01-01	534