Interval              MPECS Discovery Observations
1894-1903                  0         0            6
1904-1913                  0         0            0
1914-1923                  0         0            0
1924-1933                  0         0            0
1934-1943                  0         0            0
1944-1953                  0         0            0
1954-1963                  0         0            0
1964-1973                  0         0            0
1974-1983                  0         0            0
1984-1993                  0         0            0
1994-2003                  0         0            0
2004-2013                  0         0            0
2014-2023                  0         0            0
2024                       1         0            0