Example sentences of "cent [prep] the [adj] 20 " in BNC.

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1 The weight of the humble plastic carrier bag , for instance , has been reduced by a staggering 70 per cent in the past 20 years .
2 Although it may not yet be easy to detect the overall depletion of atmospheric ozone in the whole of the northern hemisphere , there is evidence which suggests that Europe 's ozone layer has thinned by about 3 per cent in the past 20 years , according to research published earlier in the year .
3 Surveying rural poverty in 114 nations with sizeable rural landholding populations , the report shows that the number of people living below the poverty line has increased by 40 per cent in the past 20 years .
4 One paper at the conference predicted that the heat pump companies can cut overall costs by at least 25 per cent in the next 20 years .
5 The number of people over 85 will rise by 54 per cent in the next 20 years , threatening a ‘ health care catastrophe , ’ the British Medical Association said yesterday … it adds : ‘ the general treatment of the frail elderly by the state is a scandal .
6 Rapid economic development has vastly increased demand for water in recent years , and the expansion is expected to continue : the water needs of the urban population are expected to increase by 45 per cent in the next 20 years , with industry requiring 30 per cent more water and agriculture 14 per cent more .
7 At present rates , car usage is expected to grow by 70 per cent over the next 20 years .
8 Vehicle use is expected to grow by 70 per cent over the next 20 years .
9 The government also released a study which showed that planning policies which reduced the need for people to travel could cut pollution and fuel consumption by up to 15 per cent over the next 20 years .
10 Sustainable Netherlands : A perspective for changing Northern lifestyles , suggests that the use of fossil fuels would have to be cut by 60 per cent over the next 20 years , followed by a further 60 per cent cut in the following two decades .
11 The idea is to increase the Barn Owl population in the country by 50 per cent over the next 20 years .
12 The decision has aroused controversy because the fish 's decline ( by 90 per cent over the last 20 years ) is attributed to the increasing abstraction of water from the delta , which supplies two-thirds of California 's drinking requirements .
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