Example sentences of "[n mass] over [art] [num] year " in BNC.

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1 One company in the food processing and distribution market claimed that it experienced a 50% reduction in absenteeism from 8% to 4% over a three year period .
2 And the number of U K holidays taken , domestic holidays in this country , that figure fell by seventeen percent and yet we can see here that holidays actually taken abroad by U K residents rose a staggering fifty seven percent over the four year period .
3 Deposits can be made by regular savings or by lump sum deposits subject to a maximum of £9,000 over the five year period but you may not deposit more than £3,000 in the first year or £1,800 in any succeeding year .
4 In the South Wales region it is expected that the annual quantity required from this source will rise from about 2.8 mt to 3.6 mt over the 20 year period , despite the fact that as a proportion of overall consumption it will fall from 15% to 10% .
5 In the South Wales region it is expected that the annual quantity required from this source will rise from about 2.8 mt to 3.6 mt over the 20 year period , despite the fact that as a proportion of overall consumption it will fall from 15% to 10% .
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