Total babies named Thersia (all years): 73
| Year | Girls (count / rank / %) |
|---|---|
| 1971 | 5 / #9525 / 0.000% |
| 1968 | 6 / #6940 / 0.000% |
| 1967 | 6 / #6738 / 0.000% |
| 1964 | 6 / #6709 / 0.000% |
| 1963 | 6 / #6528 / 0.000% |
| 1960 | 6 / #6333 / 0.000% |
| 1959 | 6 / #6178 / 0.000% |
| 1958 | 6 / #6048 / 0.000% |
| 1956 | 9 / #4444 / 0.000% |
| 1950 | 5 / #6030 / 0.000% |
| Year | Girls (count / rank / %) |
|---|---|
| 1949 | 7 / #4630 / 0.000% |
| 1944 | 5 / #5182 / 0.000% |