Total babies named Gretna (all years): 112
| Year | Girls (count / rank / %) |
|---|---|
| 1948 | 5 / #5542 / 0.000% |
| 1947 | 5 / #5619 / 0.000% |
| 1943 | 7 / #3949 / 0.001% |
| 1939 | 6 / #3955 / 0.001% |
| 1937 | 5 / #4505 / 0.000% |
| 1925 | 5 / #5305 / 0.000% |
| 1924 | 9 / #3490 / 0.001% |
| 1922 | 6 / #4669 / 0.001% |
| 1921 | 10 / #3252 / 0.001% |
| 1920 | 13 / #2651 / 0.001% |
| Year | Girls (count / rank / %) |
|---|---|
| 1919 | 10 / #3093 / 0.001% |
| 1918 | 5 / #5130 / 0.000% |
| 1916 | 9 / #3125 / 0.001% |
| 1915 | 12 / #2456 / 0.001% |
| 1904 | 5 / #2005 / 0.002% |