| Year | Mid-term | Final | ||
|---|---|---|---|---|
| 2018 | No answers | With answers | No answers | With answers |
| 2017 | No answers | With answers | No answers | With answers |
| 2016 | No answers | With answers | No answers | With answers |
| 2015 | No answers | With answers | No answers | With answers |
| 2014 | No answers | With answers | No answers | With answers |
| 2013 | No answers | With answers | No answers | With answers |