Year (by completion dates) | Number of Boreholes | Cumulative Total | Deformation (m) |
1900s-2015 | 872 | 872 | |
2016 | 6 | 878 | −0.038 |
2017 | 9 | 887 | −0.09 |
2018 | 8 | 895 | −0.038 |
2019 | 13 | 908 | −0.067 |
2020 | 11 | 919 | −0.096 |
2021 | 9 | 928 | −0.125 |