Year	Number of Firms
1992-01-01	2263
1997-01-01	4150
2002-01-01	3458
2003-01-01	3357
2004-01-01	3018
2005-01-01	3052
2006-01-01	3166
2007-01-01	3528
2008-01-01	3591
2009-01-01	3329
2010-01-01	3525
2011-01-01	3658
2012-01-01	3655
2013-01-01	3617
2014-01-01	3550
2015-01-01	3546
2016-01-01	3407