These events caused a change in both the volume of coverage, which increased dramatically, and also in the stories.

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The volume of MMR coverage was also "huge", with 1, 257 stories in the national press in 2002, according to science writer Dr Ben Goldacre.

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Recent years have witnessed a dramatic decline in both volume and extent, with the 2012 coverage - like the Southern Hemisphere - setting a "record" for the modern era at 3.41 million sq km.

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In addition, the committee refers to two indicators with coverage of manufacturing and goods: (1) the volume of sales of the manufacturing and trade sectors stated in real terms, adjusted for price changes, and (2) industrial production.

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Beginning six months ago, social media coverage of Apple has become increasingly negative, not just the tone but also the volume.

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