Total babies named Ryosuke (all years): 125
| Year | Boys (count / rank / %) |
|---|---|
| 2013 | 6 / #11882 / 0.000% |
| 2006 | 6 / #11776 / 0.000% |
| 2003 | 8 / #8476 / 0.000% |
| 2001 | 7 / #9041 / 0.000% |
| 2000 | 5 / #11799 / 0.000% |
| 1999 | 6 / #9665 / 0.000% |
| 1998 | 9 / #6739 / 0.000% |
| 1996 | 6 / #8810 / 0.000% |
| 1995 | 6 / #8678 / 0.000% |
| 1994 | 9 / #6254 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 1993 | 7 / #7465 / 0.000% |
| 1992 | 9 / #6048 / 0.000% |
| 1991 | 6 / #8059 / 0.000% |
| 1990 | 5 / #9251 / 0.000% |
| 1989 | 5 / #8988 / 0.000% |
| 1988 | 10 / #4722 / 0.001% |
| 1987 | 5 / #7917 / 0.000% |
| 1985 | 5 / #7383 / 0.000% |
| 1984 | 5 / #7122 / 0.000% |