Year	Number of Firms
1992-01-01	68
1997-01-01	129
2002-01-01	176
2003-01-01	197
2004-01-01	213
2005-01-01	199
2006-01-01	232
2007-01-01	257
2008-01-01	256
2009-01-01	278
2010-01-01	323
2011-01-01	324
2012-01-01	320
2013-01-01	303
2014-01-01	305
2015-01-01	310
2016-01-01	317