Year	Number of Firms
1992-01-01	149
1997-01-01	283
2002-01-01	304
2003-01-01	310
2004-01-01	335
2005-01-01	349
2006-01-01	340
2007-01-01	361
2008-01-01	369
2009-01-01	398
2010-01-01	429
2011-01-01	436
2012-01-01	438
2013-01-01	486
2014-01-01	488
2015-01-01	463
2016-01-01	454