This position was retired by the Board of Directors in 2016.
| YEARS | NAME |
| 2016 | Sandra J. Crowley |
| 2015 | Julie Cahill Tarr |
| 2014 | Julie Cahill Tarr |
| 2013 | Marianne Szabbo |
This position was retired by the Board of Directors in 2016.
| YEARS | NAME |
| 2016 | Sandra J. Crowley |
| 2015 | Julie Cahill Tarr |
| 2014 | Julie Cahill Tarr |
| 2013 | Marianne Szabbo |