With reference to Figure 2, calculate the percentage change in the UK domestic energy price index between the first quarter of 2019 and the first quarter of 2023. You are advised to show your working.

| Year | Quarter | Index (approx.) |
|---|---|---|
| 2018 | Q1 | 100.0 |
| 2018 | Q3 | 101.0 |
| 2019 | Q1 | 104.0 |
| 2019 | Q3 | 106.5 |
| 2020 | Q1 | 103.0 |
| 2020 | Q3 | 101.5 |
| 2021 | Q1 | 108.5 |
| 2021 | Q3 | 118.0 |
| 2022 | Q1 | 135.0 |
| 2022 | Q3 | 152.0 |
| 2023 | Q1 | 156.0 |
| 2023 | Q3 | 148.2 |