Total babies named Koi (all years): 1,358
| Year | Boys (count / rank / %) |
|---|---|
| 2024 | 49 / #2685 / 0.003% |
| 2023 | 55 / #2458 / 0.003% |
| 2022 | 64 / #2259 / 0.004% |
| 2021 | 53 / #2516 / 0.003% |
| 2020 | 47 / #2678 / 0.003% |
| 2019 | 39 / #3079 / 0.002% |
| 2018 | 34 / #3337 / 0.002% |
| 2017 | 26 / #4045 / 0.001% |
| 2016 | 27 / #3935 / 0.001% |
| 2015 | 22 / #4479 / 0.001% |
| Year | Boys (count / rank / %) |
|---|---|
| 2014 | 34 / #3273 / 0.002% |
| 2013 | 34 / #3240 / 0.002% |
| 2012 | 25 / #4080 / 0.001% |
| 2011 | 40 / #2933 / 0.002% |
| 2010 | 34 / #3277 / 0.002% |
| 2009 | 20 / #4850 / 0.001% |
| 2008 | 25 / #4095 / 0.001% |
| 2007 | 17 / #5330 / 0.001% |
| 2006 | 19 / #4788 / 0.001% |
| 2005 | 15 / #5453 / 0.001% |
| Year | Boys (count / rank / %) |
|---|---|
| 2004 | 14 / #5655 / 0.001% |
| 2003 | 12 / #6085 / 0.001% |
| 2002 | 14 / #5281 / 0.001% |
| 2001 | 12 / #5878 / 0.001% |
| 2000 | 9 / #7148 / 0.000% |
| 1999 | 8 / #7547 / 0.000% |
| 1997 | 10 / #5900 / 0.001% |
| 1996 | 8 / #6848 / 0.000% |
| 1995 | 7 / #7436 / 0.000% |