Year	Number of Firms
1992-01-01	221
1997-01-01	302
2002-01-01	270
2003-01-01	259
2004-01-01	277
2005-01-01	275
2006-01-01	281
2007-01-01	265
2008-01-01	265
2009-01-01	236
2010-01-01	240
2011-01-01	256
2012-01-01	261
2013-01-01	248
2014-01-01	255
2015-01-01	254
2016-01-01	258