Year	Number of Firms
1992-01-01	131
1997-01-01	148
2002-01-01	158
2003-01-01	157
2004-01-01	179
2005-01-01	161
2006-01-01	181
2007-01-01	216
2008-01-01	230
2009-01-01	212
2010-01-01	231
2011-01-01	224
2012-01-01	240
2013-01-01	240
2014-01-01	255
2015-01-01	255
2016-01-01	257