Total babies named Morio (all years): 100
| Year | Boys (count / rank / %) |
|---|---|
| 1987 | 5 / #7763 / 0.000% |
| 1985 | 9 / #4573 / 0.000% |
| 1983 | 7 / #5294 / 0.000% |
| 1981 | 6 / #6005 / 0.000% |
| 1980 | 5 / #6944 / 0.000% |
| 1979 | 7 / #5185 / 0.000% |
| 1978 | 5 / #6457 / 0.000% |
| 1975 | 6 / #5247 / 0.000% |
| 1971 | 5 / #5414 / 0.000% |
| 1926 | 5 / #4617 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 1924 | 8 / #3419 / 0.001% |
| 1923 | 5 / #4682 / 0.000% |
| 1922 | 6 / #4163 / 0.001% |
| 1921 | 5 / #4772 / 0.000% |
| 1919 | 6 / #4035 / 0.001% |
| 1917 | 5 / #4382 / 0.001% |
| 1914 | 5 / #3594 / 0.001% |