Year	Number of Firms
1992-01-01	1612
1997-01-01	2200
2002-01-01	3102
2003-01-01	3178
2004-01-01	3425
2005-01-01	3473
2006-01-01	3458
2007-01-01	3696
2008-01-01	3903
2009-01-01	3739
2010-01-01	4147
2011-01-01	4312
2012-01-01	4215
2013-01-01	4128
2014-01-01	4064
2015-01-01	3897
2016-01-01	3870