Five Takeaways From Today's 4.1 Percent Inflation FigureCorin Dann Business Editor1 - When global oil prices spike, they hit New Zealand hard and they hit fast. According to Statistics New Zealand, petrol accounted for almost a quarter of the 4.1 percent annual increase. But the inflation from oil prices is an event driven offshore supply shock. As global oil prices have come back down to more manageable levels in recent weeks, pump prices have fallen too. As of this morning, global oil prices were again knocking on US$90 a barrel.