Example sentences of "have be estimated [that] [adj] [noun] " in BNC.

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1 A major discovery was made at Jabirn in the Timor Sea in 1983 but it has been estimated that similar discoveries on a yearly basis would be necessary if increasing oil imports are not to be required in the future to maintain present levels of consumption .
2 In Europe , it has been estimated that one quarter of road traffic deaths and 10 per cent of injuries are associated with alcohol .
3 It has been estimated that one farmworker loses his job for every 750 acres of set-aside .
4 It has been estimated that retrospective appeals from Scottish landowners over previously designated SSSIs — there are currently 1300 — could cost SNH £1.5m a year , 7.5% of their budget .
5 It has been estimated that diarrhoeal illness is responsible for 250,000 deaths each year in Bangladesh .
6 In the same year in Kenya it has been estimated that African citizens and government institutions owned only about 5 per cent of corporate assets .
7 It has been estimated that each edition after 1800 probably ran to over 30,000 copies .
8 It has been estimated that these subsistence farmers are globally responsible for half of all rainforest destruction , as they march deeper and deeper into virgin forest .
9 ‘ It has been estimated that British business is losing up to £1bn a year and that around 100,000 jobs have been lost as a result of this practice . ’
10 ( By way of indication of what this represented in the family budget , it has been estimated that weekly expenditure on food in working-class families at the time was about 35 per head . ) "
11 Miles ( 1962 , reviewed in Georgiades and Phillimore , 1975 ) had found that , although the rate of implementation of changed practices in institutions had improved from 1930 ( when it had been estimated that fifteen years needed to elapse before something like 3 per cent of schools adopted a particular change ) , in the 1960s it still required seven years before 11 per cent of schools adopted an innovation .
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