Peter Stokes, from the Office for National Statistics, says changing numbers of Welsh speakers in different parts of the country can partly be explained by migration within Wales.
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A generally dry and mild night with showers confined to inland areas. A few mist patches are likely by the early hours!
After weeks of doubt, Joe Ledley has been included in Wales' twenty-three-man squad for next month's Euro 2016 finals.
Hundreds of fans have signed a petition calling for football fanzones in Wales so supporters at home can share in the atmosphere.