Of this group, people aged under 45 are more likely to source items from websites such as eBay or from family and friends than are people in older age groups.
O'r grŵp hwn, mae pobl o dan 45 oed yn fwy tebygol o ddod o hyd i eitemau o wefannau fel eBay neu gan deulu a ffrindiau na phobl mewn grwpiau oedran hŷn.