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Hollywood special effect on US GDP

Historic changes are being made to the way US growth is measured, to include output from film and television. Michelle Fleury reports on the US economy's "Hollywood ending".

Historic changes are being made to the way United States growth is measured.

The question of how to encapsulate a country's economic health - or GDP - in a single figure presents many challenges.

Now experts believe a new calculation, including film and television output, will give a better idea of the progress of the world's largest economy - as Michelle Fleury reports from New York.