He described the hit as the “productivity penalty”, which amounts to about 1.3% of gross domestic product (GDP). “That 1.3% of GDP is about £29 billion, or roughly £1,000 per household,” he said.
Article source: https://www.huffingtonpost.co.uk/entry/sophy-ridge-leaves-minister-squirming-as-he-denies-brexit-has-made-us-poorer_uk_64046be4e4b079d3eb5c663d