Total babies named Natsuko (all years): 155
| Year | Girls (count / rank / %) |
|---|---|
| 1994 | 9 / #9366 / 0.001% |
| 1993 | 6 / #12929 / 0.000% |
| 1931 | 9 / #3159 / 0.001% |
| 1929 | 8 / #3605 / 0.001% |
| 1928 | 5 / #5225 / 0.000% |
| 1927 | 8 / #3777 / 0.001% |
| 1926 | 5 / #5399 / 0.000% |
| 1925 | 17 / #2259 / 0.001% |
| 1924 | 9 / #3591 / 0.001% |
| 1923 | 8 / #3873 / 0.001% |
| Year | Girls (count / rank / %) |
|---|---|
| 1922 | 10 / #3307 / 0.001% |
| 1921 | 7 / #4327 / 0.001% |
| 1920 | 11 / #3046 / 0.001% |
| 1919 | 8 / #3709 / 0.001% |
| 1918 | 8 / #3765 / 0.001% |
| 1917 | 5 / #5101 / 0.000% |
| 1916 | 8 / #3468 / 0.001% |
| 1915 | 9 / #3065 / 0.001% |
| 1913 | 5 / #3555 / 0.001% |