Example sentences of "rates over the [adj] [num] years " in BNC.

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1 The October 1990 rate cut was anticipated for some time in advance by the gilt market which bought gilts and drove up gilt prices ( see Fig. 17.3 ) , as was the continued fall in base rates over the next two years .
2 The steep fall in interest rates over the past two years has boosted their operating profits enormously .
3 The most spectacular change in mortality rates over the past 150 years has related to deaths within the first year of life — the infant mortality rate .
4 The study comes at a time when many health authorities are reducing the number of clinics and there has been a 35% rise in teenage pregnancy rates over the last 10 years .
5 A comparison of birth rates over the last 20 years also shows a there are fewer regional variations .
6 The main contributory factor here is the greater decline among older women than older men in mortality rates over the last forty years or so , with cancer and circulatory diseases now being the main causes of the higher mortality rate among men ( Ermisch , 1983 , 1990 ) .
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