Total babies named Ko (all years): 85
| Year | Boys (count / rank / %) |
|---|---|
| 2021 | 6 / #11525 / 0.000% |
| 2020 | 7 / #10138 / 0.000% |
| 2019 | 5 / #13225 / 0.000% |
| 2016 | 8 / #9326 / 0.000% |
| 2015 | 5 / #13168 / 0.000% |
| 2011 | 5 / #13457 / 0.000% |
| 2010 | 5 / #13408 / 0.000% |
| 2008 | 5 / #13692 / 0.000% |
| 1993 | — |
| 1992 | 5 / #9200 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 1991 | 7 / #6947 / 0.000% |
| 1990 | 7 / #6843 / 0.000% |
| 1989 | 5 / #8635 / 0.000% |
| 1988 | — |
| 1985 | 5 / #7109 / 0.000% |