Jo vs Mark
Jo vs Mark: side-by-side popularity history from official U.S. Social Security birth records.
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Jo
| Total recorded births | 1,854 |
| Peak year | 1960 (#1246) |
| Years on the list | 107 |
| 10-year trend | -6.7% |
Mark
| Total recorded births | 1,362,176 |
| Peak year | 1960 (#6) |
| Years on the list | 146 |
| 10-year trend | -22.1% |
Figures are from the U.S. Social Security Administration Popular Baby Names dataset (public domain). Names with fewer than 5 recorded births in a year or state are suppressed by the source.