You could win one of two €100 One4All vouchers. (5–10 minutes)
Take our short Customer Satisfaction Survey and tell us how we can improve. You could win one of two €100 One4All vouchers. (5–10 minutes)
| One dataset rule | Two dataset rule | |
| 2014 | 15.9 | 16.1 |
| 2015 | 30.2 | 30.3 |
| 2016 | 21.8 | 23.7 |
| 2017 | 44 | 44.1 |
| 2018 | 42.3 | 42.4 |
| 2019 | 44.9 | 33.8 |