Interval              MPECS Discovery Observations
2016                       8         0           37
2017                      55         0          229
2018                       5         0           25
2019                      30         0           84
2020                      44         1          145
2021                      49         0          146
2022                       1         0            0
2023                       5         0           16
2024                       1         0            5
2025                       2         0            3
2026                       4         0           16