Study Table 1, which shows the mean annual footpath depth loss (in millimetres) due to visitor pressure at a monitored upland path in the Lake District National Park between 2019 and 2023.
| Year | Footpath Depth Loss (mm) |
|---|---|
| 2019 | 5.7 |
| 2020 | 2.3 |
| 2021 | 4.9 |
| 2022 | 6.4 |
| 2023 | 7.1 |
Calculate the mean annual footpath depth loss at this monitoring site between 2019 and 2023.
Answer to one decimal place.
You must show your working.
