Example sentences of "[noun pl] over the [num ord] 30 years " in BNC.

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1 That is likely to save 700 lives and more than 30,000 casualties over the next 30 years .
2 These two questions represent the focus of a considerable amount of research by developmental psychologists over the last 30 years .
3 An extensive programme of geological thin-sectioning of stone implements in various universities over the last 30 years has shown quite clearly that between 3000 and 1500 BC there were a number of heavily exploited sources of stone and flint which were used to make axes and other implements .
4 The Human Development Report 1992 released by the UN Development Programme ( UNDP ) on April 23 showed that the doubling of income disparities over the last 30 years had enabled " the richest 20 per cent of the world 's people [ to become ] … at least 150 times more than the poorest 20 per cent " .
5 Situated on the edge of the attractive village of Tiffield , Ark Farm has evolved from a number of farms over the last 30 years .
6 Irrigation and agricultural policies — especially for the Soviet cotton industry — meant that the water level in the Aral Sea had fallen by over 14 metres over the last 30 years .
7 There is no reliable estimate of abundance for the franciscana , although the incidental gill-net kill of tens of thousands of dolphins over the last 30 years has undoubtedly significantly reduced the total population .
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