Interval              MPECS Discovery Observations
2005                       5         0          288
2006                      70         0          451
2007                      50         1          238
2008                      16         0          226
2009                      10         0           70
2010                       1         0            4
2011                      20         0          212
2012                       3         0           12
2013                       1         0            4
2014                       2         0            9
2015                       0         0            3
2016                       1         0            0
2017                       7         0           14
2018                       7         0          267
2019                       0         0           40
2020                       5         0           11
2021                       1         0            7
2022                       1         0           28
2023                       0         0            7
2024                       6         0           16