Year	Number of Firms
1992-01-01	154
1997-01-01	243
2002-01-01	256
2003-01-01	262
2004-01-01	294
2005-01-01	344
2006-01-01	330
2007-01-01	394
2008-01-01	452
2009-01-01	427
2010-01-01	449
2011-01-01	529
2012-01-01	504
2013-01-01	520
2014-01-01	520
2015-01-01	519
2016-01-01	484