Total babies named Issai (all years): 91
| Year | Boys (count / rank / %) |
|---|---|
| 2016 | 6 / #11257 / 0.000% |
| 2012 | 7 / #10125 / 0.000% |
| 2011 | 5 / #13056 / 0.000% |
| 2010 | 6 / #11270 / 0.000% |
| 2008 | 7 / #10303 / 0.000% |
| 2007 | 5 / #13099 / 0.000% |
| 2006 | 14 / #5896 / 0.001% |
| 2004 | 10 / #7188 / 0.001% |
| 2002 | 9 / #7269 / 0.000% |
| 2001 | 5 / #11243 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 2000 | 5 / #11058 / 0.000% |
| 1998 | 7 / #7903 / 0.000% |
| 1990 | 5 / #8644 / 0.000% |