Radio listening has remained very resilient over the past decade, but over the past few years listening among under-24s has started to decline significantly.
Mae gwrando ar y radio wedi aros yn gadarn iawn dros y degawd diwethaf, ond dros y blynyddoedd diwethaf mae gwrando ymysg pobl o dan 24 oed wedi dechrau dirywio’n sylweddol.