Consumer prices rose by 5.3% year on year in December, according to the National Institute of Statistics. However, prices fell by 0.7% on an annual average basis in 2009, marking the first year of deflation since 2001. On a month-on-month basis consumer prices also continued to decline in December, falling by 0.1%, following falls of 0.3% in October and 0.6% in November. Food prices fell by 1%, making December the third month in a row during which prices had fallen. But petrol stations have now begun to raise pump prices for petrol and diesel, in line with an increase in the international price of crude oil, and the rise in the cost of transporting goods is likely to have been passed on to consumers in the form of higher prices.