Nigeria’s inflation rate bucked the trend in February to fall to 17.78 percent, its lowest level in 15 months, driven by a slower rise in general price levels, the National Bureau of Statistics said on Tuesday.

Inflation had risen to 18.72 percent in January, its 12th monthly rise and its highest level in more than 11 years, as Africa’s biggest economy grapples with an economic recession, a currency crisis and dollar shortages, brought on by low oil prices, its mainstay.

The central bank, under pressure to narrow the gap between the official and black market rates, has devalued the naira for consumers, offering to sell them dollars at about half the premium the black market charges.

It has also increased dollar sales in recent weeks to importers to try to boost the naira. Nigeria has limited manufacturing capacity and depends on imports for local consumption.

A separate food index showed inflation at 18.53 percent from 17.82 percent in January, the statistics office said in a report, pushed up by the rise in food staples such as bread, cereal and meat, while drink prices slowed.

Last week the government unveiled sweeping economic recovery plans, including measures to reduce its dependence on oil and to relax foreign exchange restrictions, in a drive to pull Africa’s top oil producer out of its first recession in 25 years.

It forecasts inflation to be at 15.74 percent at year-end and 12.42 percent in 2018, which if achieved, could alleviate widespread frustration with living costs, analysts say.

(Editing by Robin Pomeroy)