12147573863 (12/01/2006 — 05/15/2007), Exchangeable retrospectively 
12147574534 (03/01/2007 — 12/18/2006), Exchangeable retrospectively 
12147575875 (03/01/2007 — 10/17/2007), Exchangeable retrospectively 
12147583332 (09/01/2007 — 07/03/2008), Exchangeable retrospectively 
12147586933 (03/01/2008 — 11/18/2008), Exchangeable retrospectively 
12147592080 (09/01/2008 — 10/08/2009), Exchangeable retrospectively 
12147602118 (09/01/2009 — 07/07/2009), Exchangeable retrospectively 
12147604567 (10/01/2009 — 05/11/2010), Bilaterally exchangeable 
12147611358 (03/01/2010 — 11/03/2011), Exchangeable retrospectively 
12147616431 (03/01/2011 — ), Exchangeable retrospectively 
12148612998 (03/01/2013 — 09/10/2013), nonexchangeable retrospectively 
12148618862 (07/01/2013 — 09/24/2014), Bilaterally exchangeable 
12148619751 (03/01/2014 — ), Bilaterally exchangeable 
12147568370 (06/01/2006 — 07/31/2006), Exchangeable retrospectively 
12147567491 (06/01/2006 — 04/25/2006)