The data in this table are based on the survey EUROBAROMETER 91.4 (May 2019). The data shows what percentage of all respondents have selected each answer (from "Yes", "no", or DK="Don't know") when asked the question "Do you believe that official documents, like passports and birth certificates, should have a third option, such as X or O (other) beside male (M) and female (F) for those persons who do not identify as female and male?"
Available flags:
| b | break in time series | c | confidential |
| d | definition differs, see metadata | e | estimated |
| f | forecast | i | see metadata |
| m | imputed | n | not significant |
| p | provisional | r | revised |
| s | Eurostat estimate | u | low reliability |
| x | dropped due to insufficient sample size | y | unreliable due to small sample size |
| z | not applicable |