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Note: Unverified issues are gold, secondary verifications are light blue
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | No month | |||
| 2013 | January 1 | February 1 | March 1 | April 1 | May 1 | - | - | - | - | - | - | - | - | ||
| 2012 | January 1 | February 1 | March 1 | April 1 | May 1 | June 1 | July 1 | August 1 | September 1 | October 1 | November 1 | December 1 | - | ||
| 2011 | January 1 | February 1 | March 1 |
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May 1 | June 1 | July 1 | August 1 | September 1 | October 1 | November 1 | December 1 | - | ||
| 2010 | - | - | - | - | - | - | - | - | - | - | November 1 | December 1 | - |