Statistical information on the Welsh language skills of people in Wales, and their use of the language. The Census is the key source of information about the number of people who can speak Welsh. The Annual Population Survey also collects information about respondents’ Welsh speaking ability and frequency of use. The APS estimates of Welsh language ability are historically higher than those produced by the Census. More detailed information about Welsh speakers’ fluency, and their use of Welsh in a range of settings, is available in the 2004-06 and 2013-14 Welsh Language Use Surveys.