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| | | 2012/13 | 2013/14 | 2014/15 | 2015/16 | 2016/17 | 2017/18 | 2018/19 | 2019/20 | 2020/21 | 2021/22 | 2022/23 | 2023/24 | 2024/25 |
Wales | 68 | 70 | 66 | 66 | 70 | 70 | 75 | . | 80 | 79 | 79 | 82 | 85 |
| Wales | North Wales | 14 | 15 | 15 | 15 | 15 | 15 | 14 | . | 16 | 16 | 16 | 16 | 18 |
| North Wales | Aberconwy | 1 | 1 | 1 | 1 | 1 | 1 | 1 | . | 1 | 1 | 1 | 1 | 1 |
| Alyn and Deeside | 1 | 1 | 1 | 1 | 1 | 1 | 1 | . | 2 | 2 | 3 | 3 | 3 |
| Arfon | 2 | 2 | 2 | 2 | 2 | 2 | 2 | . | 2 | 2 | 1 | 1 | 1 |
| Clwyd South | 3 | 3 | 3 | 2 | 2 | 2 | 1 | . | 2 | 2 | 2 | 2 | 3 |
| Clwyd West | 2 | 2 | 2 | 2 | 2 | 2 | 2 | . | 2 | 2 | 2 | 2 | 2 |
| Delyn | 1 | 2 | 2 | 2 | 2 | 2 | 2 | . | 2 | 2 | 2 | 2 | 3 |
| Vale of Clwyd | 2 | 1 | 1 | 2 | 2 | 2 | 2 | . | 2 | 2 | 2 | 2 | 2 |
| Wrexham | 1 | 1 | 1 | 1 | 1 | 1 | 1 | . | 1 | 1 | 1 | 1 | 1 |
| Ynys MĂ´n | 1 | 2 | 2 | 2 | 2 | 2 | 2 | . | 2 | 2 | 2 | 2 | 2 |
Mid And West Wales | 21 | 22 | 20 | 20 | 20 | 19 | 22 | . | 23 | 23 | 22 | 22 | 23 |
| Mid And West Wales | Brecon and Radnorshire | 4 | 3 | 2 | 2 | 2 | 3 | 3 | . | 3 | 3 | 4 | 4 | 6 |
| Carmarthen East and Dinefwr | 3 | 3 | 3 | 3 | 2 | 1 | 1 | . | 1 | 1 | 1 | 1 | 1 |
| Carmarthen West and South Pembrokeshire | 2 | 2 | 2 | 2 | 2 | 2 | 2 | . | 3 | 3 | 3 | 3 | 1 |
| Ceredigion | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . |
| Dwyfor Meirionnydd | 1 | 1 | 1 | 2 | 2 | 2 | 2 | . | 2 | 2 | 2 | 2 | 2 |
| Llanelli | 4 | 4 | 4 | 3 | 3 | 2 | 3 | . | 3 | 3 | 2 | 2 | 2 |
| Montgomeryshire | 3 | 4 | 4 | 4 | 4 | 4 | 5 | . | 5 | 6 | 5 | 5 | 5 |
| Preseli Pembrokeshire | 3 | 4 | 4 | 4 | 5 | 5 | 6 | . | 6 | 5 | 5 | 5 | 6 |
South Wales West | 9 | 9 | 8 | 8 | 9 | 9 | 9 | . | 10 | 10 | 9 | 9 | 9 |
| South Wales West | Aberavon | . | . | . | 1 | 1 | 1 | 1 | . | 2 | 2 | 2 | 2 | 2 |
| Bridgend | 3 | 3 | 2 | 1 | 1 | 1 | 1 | . | 1 | 1 | 1 | 1 | 1 |
| Gower | 2 | 2 | 1 | . | . | 1 | 1 | . | 1 | 1 | 1 | 1 | 1 |
| Neath | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . |
| Ogmore | 1 | 1 | 1 | 2 | 2 | 1 | 1 | . | 1 | 1 | 1 | 1 | 1 |
| Swansea East | 1 | 1 | 2 | 2 | 2 | 2 | 2 | . | 1 | 1 | 1 | 1 | 1 |
| Swansea West | 2 | 2 | 2 | 2 | 3 | 3 | 3 | . | 3 | 3 | 3 | 3 | 3 |
South Wales Central | 15 | 15 | 15 | 15 | 17 | 18 | 20 | . | 20 | 20 | 19 | 22 | 23 |
| South Wales Central | Cardiff Central | 4 | 3 | 4 | 4 | 4 | 5 | 5 | . | 5 | 5 | 5 | 5 | 6 |
| Cardiff North | 4 | 4 | 4 | 4 | 4 | 4 | 4 | . | 4 | 4 | 4 | 4 | 4 |
| Cardiff South and Penarth | 3 | 3 | 2 | 2 | 3 | 3 | 4 | . | 4 | 4 | 4 | 5 | 5 |
| Cardiff West | 3 | 4 | 4 | 4 | 5 | 5 | 6 | . | 5 | 5 | 5 | 5 | 5 |
| Cynon Valley | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . |
| Pontypridd | . | . | . | . | . | . | . | . | . | . | . | . | . |
| Rhondda | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 |
| Vale of Glamorgan | . | . | 1 | 1 | 1 | 1 | 1 | . | 2 | 2 | 1 | 2 | 2 |
South Wales East | 9 | 9 | 8 | 8 | 9 | 9 | 10 | . | 11 | 10 | 13 | 13 | 12 |
| South Wales East | Blaenau Gwent | . | . | . | . | . | . | . | . | . | . | . | . | . |
| Caerphilly | 1 | 1 | 1 | 1 | 2 | 2 | 2 | . | 2 | 2 | 2 | 2 | 2 |
| Islwyn | . | . | . | . | . | . | . | . | . | . | . | . | 1 |
| Merthyr Tydfil and Rhymney | . | . | . | . | . | . | . | . | . | . | . | . | . |
| Monmouth | 6 | 6 | 5 | 5 | 5 | 5 | 5 | . | 5 | 3 | 5 | 5 | 3 |
| Newport East | . | . | . | . | . | . | 1 | . | 1 | 1 | 2 | 2 | 2 |
| Newport West | 2 | 2 | 2 | 2 | 2 | 2 | 2 | . | 3 | 4 | 4 | 4 | 4 |
| Torfaen | . | . | . | . | . | . | . | . | . | . | . | . | . |