Year	Number of Firms
1992-01-01	137
1997-01-01	152
2002-01-01	171
2003-01-01	185
2004-01-01	191
2005-01-01	180
2006-01-01	191
2007-01-01	170
2008-01-01	180
2009-01-01	173
2010-01-01	175
2011-01-01	172
2012-01-01	170
2013-01-01	164
2014-01-01	157
2015-01-01	150
2016-01-01	141