With reference to Figure 1, calculate the percentage change in the Consumer Price Index (CPI) for public transport services between the fourth quarter of 2018 and the fourth quarter of 2023. You are advised to show your working.

| Year | Quarter | Index |
|---|---|---|
| 2018 | Q1 | 100.0 |
| 2018 | Q2 | 102.1 |
| 2018 | Q3 | 103.5 |
| 2018 | Q4 | 105.0 |
| 2019 | Q1 | 106.2 |
| 2019 | Q2 | 107.8 |
| 2019 | Q3 | 109.1 |
| 2019 | Q4 | 110.5 |
| 2020 | Q1 | 111.3 |
| 2020 | Q2 | 112.0 |
| 2020 | Q3 | 113.8 |
| 2020 | Q4 | 115.0 |
| 2021 | Q1 | 116.4 |
| 2021 | Q2 | 118.2 |
| 2021 | Q3 | 120.5 |
| 2021 | Q4 | 123.0 |
| 2022 | Q1 | 125.8 |
| 2022 | Q2 | 129.0 |
| 2022 | Q3 | 132.5 |
| 2022 | Q4 | 136.0 |
| 2023 | Q1 | 139.2 |
| 2023 | Q2 | 142.1 |
| 2023 | Q3 | 144.5 |
| 2023 | Q4 | 147.0 |