Total babies named Theory (all years): 223
| Year | Girls (count / rank / %) |
|---|---|
| 2024 | 14 / #7889 / 0.001% |
| 2023 | 19 / #6383 / 0.001% |
| 2022 | 18 / #6685 / 0.001% |
| 2021 | 18 / #6661 / 0.001% |
| 2020 | 8 / #12043 / 0.001% |
| 2019 | 8 / #12348 / 0.000% |
| 2018 | 7 / #13675 / 0.000% |
| 2017 | 5 / #18211 / 0.000% |
| 2016 | 8 / #12788 / 0.000% |
| 2015 | 7 / #14366 / 0.000% |
| Year | Girls (count / rank / %) |
|---|---|
| 2014 | 8 / #12975 / 0.000% |
| 2013 | 9 / #11884 / 0.001% |
| 2012 | 8 / #13366 / 0.000% |
| 2010 | — |
| 2009 | — |
| 2006 | 5 / #19831 / 0.000% |