Interval              MPECS Discovery Observations
2002                       7         0           18
2003                      23         0          124
2004                      35         0          261
2005                      24         0          208
2006                      26         0          216
2007                      13         0           97
2008                       5         0           59
2009                      12         0           85
2010                       3         0           16
2011                       5         0           28
2012                       0         0            0
2013                       5         0           42
2014                      16         0           55
2015                       1         0            9
2016                       0         0            3
2017                       2         0            3
2018                       1         0            3
2019                       0         0            0
2020                       1         0            0
2021                       0         0            0
2022                       0         0            0
2023                       1         0            9
2024                       3         0            9
2025                       0         0            0
2026                       6         0           44