The early indicators for mid-2020 suggest that for the oldest age group, 80 years and over, there is a larger difference (-0.67%) compared with the 2018-based national population projections.
Mae'r dangosyddion cynnar ar gyfer canol 2020 yn awgrymu, ar gyfer y grŵp oedran hynaf, 80 oed a throsodd, fod gwahaniaeth mwy (-0.67%) gymharu ag amcanestyniadau poblogaeth cenedlaethol 2018.