The most similar competitor was selected from a group of comparators by identifying the country with the most similar NRCA to Wales for each product group.
Dewiswyd y cystadleuydd mwyaf tebyg o grŵp o gymaryddion drwy nodi’r wlad sydd â’r NRCA tebycaf i Gymru ar gyfer pob grŵp cynnyrch.