The gap between the proportion of the female and male populations who are able to speak Welsh is at its widest for the 16- to 18-year-old population and at its narrowest for the older population.
Mae'r bwlch rhwng cyfran y merched a dynion sy'n gallu siarad Cymraeg ar ei fwyaf ar gyfer y boblogaeth 16 i 18 oed ac ar ei leiaf ar gyfer y boblogaeth hŷn.