Interval              MPECS Discovery Observations
2017                       0         0           57
2018                       5         0           67
2019                      22         0           69
2020                      33         0          124
2021                       2         0            0
2022                       2         0            0
2023                       1         0            3
2024                       8         0           33
2025                       1         0            0