Year	Number of Firms
1992-01-01	174
1997-01-01	268
2002-01-01	254
2003-01-01	240
2004-01-01	231
2005-01-01	234
2006-01-01	236
2007-01-01	239
2008-01-01	238
2009-01-01	233
2010-01-01	251
2011-01-01	252
2012-01-01	268
2013-01-01	276
2014-01-01	260
2015-01-01	246
2016-01-01	242