This has decreased since the first part of the pandemic: during the period May to September, 8% of people said they had volunteered in the previous 4 weeks.
Mae hyn wedi gostwng ers rhan gyntaf y pandemig: yn ystod y cyfnod o fis Mai i fis Medi, dywedodd 8% o bobl eu bod wedi gwirfoddoli yn ystod y 4 wythnos flaenorol.