GDP stands for Gross Domestic Product, and it attempts to show the economic state of the country in a number.
It's a measure of how the economy has grown or contracted over a three month period.
The level of GDP is measured in three ways: the value of the goods and services produced by the economy, the value of goods and services purchased by households and the government, and the income generated in terms of profit and wages.
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Well a fabulous day today has ended on a spectacularly soggy note for some! Heavy rain, hail and thunder will work northwards overnight!
The Talyllyn runs from Tywyn, near Aberdovey, for more than seven miles to two villages in the south Gwynedd countryside.
Homes in parts of Tonypandy and Llwynypia are without water this evening due to a burst water main at Cilfynydd.