Example sentences of "of [noun sg] [noun pl] over the last " in BNC.

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1 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 " .
2 A comparison of birth rates over the last 20 years also shows a there are fewer regional variations .
3 Yellowfin became elusive after the El Nino current change affected the availability of food supplies over the last two decades .
4 The narrowing of differences is revealed most obviously in a comparison of unemployment rates over the last decade .
5 This national dairy breed was formed during the 1960s by the amalgamation of several red or red-and-white types after a gradual series of breed absorptions over the last 40 or 50 years .
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