Figure 11 shows that by mid-2021, the male population aged 20 to 25 years old decreased by 4.7% compared to an increase of 4.3% for the female population aged 20 to 25 years old.
Mae Ffigur 11 yn dangos, erbyn canol 2021, fod gostyngiad o 4.7% yn y boblogaeth o wrywod 20 i 25 oed, o'i gymharu â chynnydd o 4.3% yn y boblogaeth o fenywod 20 i 25 oed.