Year	Number of Firms
1992-01-01	72
1997-01-01	122
2002-01-01	176
2003-01-01	193
2004-01-01	232
2005-01-01	222
2006-01-01	249
2007-01-01	240
2008-01-01	280
2009-01-01	301
2010-01-01	290
2011-01-01	309
2012-01-01	342
2013-01-01	354
2014-01-01	352
2015-01-01	320
2016-01-01	256