Caiff busnesau sy'n gwerthu nwyddau'n uniongyrchol i'r cwsmeriaid sy'n eu defnyddio eu diffinio fel manwerthwyr. Yr ystadegyn allweddol ar gyfer manwerthu yw'r Mynegai Gwerthiannau Manwerthu (RSI), a gyhoeddir yn fisol. Mae data yn y RSI yn ymdrin â gwariant ar nwyddau yn unig (mewn siopau ac ar-lein). Mae data am wario ar wasanaethau ar gael ym Mynegai Gwasanaethau (IoS).
In the three months to February 2019, the quantity bought increased by 0.7% when compared with the previous three months, with strong growth in non-store retailing and fuel.
The monthly growth rate in the quantity bought in February 2019 increased by 0.4%, with a decline of 1.2% in food stores offset by growth in all other main sectors.
The monthly fall in food stores was the strongest decline since December 2016 at negative 1.5%, reversing the increase of 0.9% in January 2019, with food retailers suggesting that “getting back to normal” following the January sales had contributed to this fall.