Total babies named Sonji (all years): 904
| Year | Girls (count / rank / %) |
|---|---|
| 1991 | 6 / #12928 / 0.000% |
| 1988 | 5 / #13602 / 0.000% |
| 1986 | 5 / #12566 / 0.000% |
| 1983 | 6 / #10098 / 0.000% |
| 1981 | 5 / #11935 / 0.000% |
| 1980 | 8 / #8063 / 0.000% |
| 1979 | 7 / #8883 / 0.000% |
| 1978 | 8 / #7553 / 0.001% |
| 1977 | 13 / #5167 / 0.001% |
| 1976 | 12 / #5155 / 0.001% |
| Year | Girls (count / rank / %) |
|---|---|
| 1975 | 6 / #8894 / 0.000% |
| 1974 | 9 / #6180 / 0.001% |
| 1973 | 26 / #2738 / 0.002% |
| 1972 | 41 / #1987 / 0.003% |
| 1971 | 50 / #1794 / 0.003% |
| 1970 | 39 / #2113 / 0.002% |
| 1969 | 75 / #1314 / 0.004% |
| 1968 | 69 / #1344 / 0.004% |
| 1967 | 98 / #1044 / 0.006% |
| 1966 | 225 / #639 / 0.013% |
| Year | Girls (count / rank / %) |
|---|---|
| 1965 | 96 / #1073 / 0.005% |
| 1964 | 35 / #2036 / 0.002% |
| 1963 | 8 / #5234 / 0.000% |
| 1962 | 8 / #5238 / 0.000% |
| 1961 | 7 / #5763 / 0.000% |
| 1960 | 8 / #5120 / 0.000% |
| 1958 | 5 / #6904 / 0.000% |
| 1955 | 5 / #6603 / 0.000% |
| 1954 | 5 / #6514 / 0.000% |
| 1953 | 8 / #4552 / 0.000% |
| Year | Girls (count / rank / %) |
|---|---|
| 1951 | 6 / #5342 / 0.000% |