Doubters origin
| Rotterdam | 5 | (18.5%) |
| Zwijndrecht | 4 | (14.8%) |
| Nederland | 2 | (7.4%) |
| Vlissingen | 2 | (7.4%) |
| Alphen aan den Rijn | 1 | (3.7%) |
| Brielle | 1 | (3.7%) |
| Capelle aan den IJssel | 1 | (3.7%) |
| Dongen | 1 | (3.7%) |
| Eindhoven | 1 | (3.7%) |
| Hellevoetsluis | 1 | (3.7%) |
| Oosterhout | 1 | (3.7%) |
| Ossendrecht | 1 | (3.7%) |
| Ridderkerk | 1 | (3.7%) |
| Spijkenisse | 1 | (3.7%) |
| Tilburg | 1 | (3.7%) |
| Waalwijk | 1 | (3.7%) |
| Zegveld | 1 | (3.7%) |
| ? | 1 | (3.7%) |
Cities with less then 1% of the total are not displayed
Map