Total babies named Ja (all years): 435
| Year | Boys (count / rank / %) |
|---|---|
| 2024 | 8 / #9323 / 0.000% |
| 2023 | 7 / #10139 / 0.000% |
| 2022 | 15 / #5968 / 0.001% |
| 2011 | 6 / #11392 / 0.000% |
| 2010 | 5 / #13023 / 0.000% |
| 2008 | 5 / #13312 / 0.000% |
| 2007 | — |
| 2006 | 7 / #9982 / 0.000% |
| 2005 | 5 / #12130 / 0.000% |
| 2004 | 12 / #6286 / 0.001% |
| Year | Boys (count / rank / %) |
|---|---|
| 2003 | 9 / #7490 / 0.000% |
| 2002 | 10 / #6731 / 0.001% |
| 2001 | 15 / #4982 / 0.001% |
| 2000 | 15 / #4885 / 0.001% |
| 1999 | 20 / #3751 / 0.001% |
| 1998 | 6 / #8918 / 0.000% |
| 1997 | 7 / #7601 / 0.000% |
| 1996 | 5 / #9596 / 0.000% |
| 1995 | 10 / #5662 / 0.001% |
| 1994 | 9 / #6041 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 1993 | 6 / #8037 / 0.000% |
| 1992 | 5 / #8962 / 0.000% |
| 1991 | 7 / #6824 / 0.000% |
| 1989 | 9 / #5345 / 0.000% |
| 1986 | 7 / #5575 / 0.000% |
| 1985 | 5 / #6962 / 0.000% |
| 1984 | 6 / #5882 / 0.000% |
| 1983 | 11 / #3725 / 0.001% |
| 1982 | 6 / #5948 / 0.000% |
| 1981 | 10 / #3968 / 0.001% |
| Year | Boys (count / rank / %) |
|---|---|
| 1980 | 7 / #5170 / 0.000% |
| 1979 | 13 / #3242 / 0.001% |
| 1978 | 6 / #5351 / 0.000% |
| 1977 | 6 / #5415 / 0.000% |
| 1976 | 7 / #4625 / 0.000% |
| 1974 | 5 / #5545 / 0.000% |
| 1971 | 7 / #4145 / 0.000% |
| 1967 | — |
| 1959 | — |
| 1957 | — |