However, some smaller breakdowns may be impacted negatively, and more extreme changes could be seen given the reduced size of the underlying sample since the start of the pandemic.
Efallai y bydd rhai dadansoddiadau llai yn cael eu heffeithio'n negyddol a gellir gweld newidiadau mwy eithafol o ystyried maint llai y sampl sylfaenol ers dechrau'r pandemig.