Year	Number of Firms
1992-01-01	145
1997-01-01	202
2002-01-01	241
2003-01-01	257
2004-01-01	267
2005-01-01	278
2006-01-01	288
2007-01-01	294
2008-01-01	286
2009-01-01	286
2010-01-01	335
2011-01-01	333
2012-01-01	316
2013-01-01	308
2014-01-01	319
2015-01-01	301
2016-01-01	311