A 2005 study by New Zealand Reserve Bank economist Felix Delbruck ("Oil prices and the New Zealand economy" - Reserve Bank of New Zealand: Bulletin, Vol. 68, No. 4) has found that the inflationary effects of higher oil prices were "quite large". Specifically that :-
- the direct impact of a $.10c a litre increase in petrol price lead to an immediate increase in the average household's living cost of about 0.3%
- the indirect effect (of higher bus, taxi, train and air travel, and firms passing on higher transport costs which raised the cost of food etc) added another 0.3% onto the direct effect -- a total 0.6% increase in the CPI for every $.10c a litre increase in fuel.
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