The total value of Japan's economic output measured in yen did not increase at all between 1991 and 2011, because increases in the volume of output during the two decade period were entirely offset by falling prices.

BBC: Q&A: Bank of Japan's inflation target

The rules of the competition state: "The winner will be the individual, team or organisation that achieves the greatest volume of electrical output over the set minimum hurdle of 100 GWh over a continuous two year period, using only the power of the sea".

BBC: Scotland

The new building, completed in February, is 1, 000 square feet bigger and filled with new machinery, bigger freezers and bigger coolers, allowing Sunburst to more than double processing volume to 5, 000 pounds (of output) a day.

FORBES: She Shall Overcome

Luke collapsed on 6 April with "minimal cardiac output" and a "large volume of fluid" was found on his right chest.

BBC: Luke Jenkins death partly due to 'low staffing' levels

The growth rate of world output of goods and services has been in an extensive slowdown since 2008, but the volume of financial assets continues to expand quickly.

FORBES: Poor Economy, Rich (And Getting Richer) Nations

To explain the graph a bit more clearly, the X axis is months and years, while the Y axis is the volume of industrial activity as a percentage of the average monthly output of 2009 (which, it should be noted, was depressed as a result of the global financial crisis).

FORBES: Russian Industrial Production Increases by 4% over 1st Quarter 2011

Boe allows output of oil, measured in barrels, and gas, measured by its volume, to be added together to form one figure and measures production volumes rather than values. (Further explanation about boe can be found here).

FORBES: Oil Extraction in The Amazon Rainforest: HRT Expects Daily Production Of 50,000 Barrels Of Oil in The Solim?es Basin by 2014

Transmitted volume was also a bit low, meaning we had to speak up to get the same level of output as compared to a few other handsets we tried.

ENGADGET: BlackBerry Z10 review Mobile