Total babies named Kaiyu (all years): 93
| Year | Boys (count / rank / %) |
|---|---|
| 2022 | 5 / #13283 / 0.000% |
| 2016 | 5 / #13199 / 0.000% |
| 2015 | 7 / #10075 / 0.000% |
| 2013 | 6 / #11446 / 0.000% |
| 2011 | 7 / #10194 / 0.000% |
| 2009 | 6 / #11710 / 0.000% |
| 2008 | 8 / #9425 / 0.000% |
| 2007 | 9 / #8566 / 0.000% |
| 2005 | 5 / #12369 / 0.000% |
| 2004 | 9 / #7869 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 2003 | 6 / #10231 / 0.000% |
| 2002 | 10 / #6798 / 0.001% |
| 2001 | 10 / #6707 / 0.001% |