Total babies named Kotaro (all years): 194
| Year | Boys (count / rank / %) |
|---|---|
| 2023 | 7 / #10307 / 0.000% |
| 2022 | 5 / #13463 / 0.000% |
| 2020 | 6 / #11376 / 0.000% |
| 2019 | 5 / #13238 / 0.000% |
| 2018 | 8 / #9275 / 0.000% |
| 2016 | 8 / #9335 / 0.000% |
| 2015 | 10 / #7804 / 0.001% |
| 2013 | 10 / #7856 / 0.001% |
| 2012 | 7 / #10322 / 0.000% |
| 2011 | 8 / #9241 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 2010 | 15 / #5915 / 0.001% |
| 2009 | 7 / #10519 / 0.000% |
| 2008 | 9 / #8704 / 0.000% |
| 2007 | 7 / #10411 / 0.000% |
| 2006 | 13 / #6309 / 0.001% |
| 2005 | 6 / #10880 / 0.000% |
| 2003 | 9 / #7583 / 0.000% |
| 2002 | 10 / #6825 / 0.001% |
| 2001 | 6 / #9998 / 0.000% |
| 2000 | 6 / #9787 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 1998 | 10 / #6108 / 0.001% |
| 1997 | 7 / #7748 / 0.000% |
| 1995 | 5 / #9676 / 0.000% |
| 1990 | 5 / #8884 / 0.000% |
| 1919 | 5 / #4502 / 0.001% |