| January | F | May | K | September | U |
| February | G | June | M | October | V |
| March | H | July | N | November | X |
| April | J | August | Q | December | Z |
Year codes refer to the last digit of the year: 2012 is expressed as 2.
The current year and the next five years will be listed. A new calendar year will be added following the termination of trading in the December contract of the current year.
For customer support for electronic trading including error trades, contact the CME Global Command Center:
Asia: +65 6532 5010
Europe: +44 800 898 013
North America: +1 800 438 8616
