Total babies named Sekai (all years): 309
| Year | Boys (count / rank / %) |
|---|---|
| 2024 | 36 / #3311 / 0.002% |
| 2023 | 41 / #3050 / 0.002% |
| 2022 | 30 / #3757 / 0.002% |
| 2021 | 12 / #7025 / 0.001% |
| 2020 | 9 / #8605 / 0.001% |
| 2019 | 10 / #8109 / 0.001% |
| 2017 | 10 / #8038 / 0.001% |
| 2016 | 9 / #8693 / 0.000% |
| 2015 | 5 / #13710 / 0.000% |
| 2013 | — |
| Year | Boys (count / rank / %) |
|---|---|
| 2012 | 6 / #12027 / 0.000% |
| 2011 | 6 / #12011 / 0.000% |
| 2010 | 7 / #10562 / 0.000% |
| 2009 | 12 / #7161 / 0.001% |
| 2008 | 6 / #12303 / 0.000% |
| 2007 | — |
| 2006 | 5 / #13665 / 0.000% |
| 2005 | 10 / #7553 / 0.001% |
| 2004 | — |
| 2003 | 6 / #10655 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 2001 | 7 / #9066 / 0.000% |
| 2000 | — |