Total babies named Ersa (all years): 69
| Year | Girls (count / rank / %) |
|---|---|
| 1934 | 5 / #4478 / 0.000% |
| 1927 | 5 / #5034 / 0.000% |
| 1925 | 6 / #4592 / 0.000% |
| 1924 | 5 / #5326 / 0.000% |
| 1922 | 5 / #5250 / 0.000% |
| 1921 | 6 / #4652 / 0.000% |
| 1920 | 8 / #3720 / 0.001% |
| 1919 | 8 / #3567 / 0.001% |
| 1918 | 5 / #5067 / 0.000% |
| 1912 | 5 / #3124 / 0.001% |
| Year | Girls (count / rank / %) |
|---|---|
| 1911 | 6 / #2280 / 0.001% |
| 1904 | 5 / #1978 / 0.002% |