The Central Bank of Nigeria (CBN), said the aggregate foreign exchange inflow into the country stood at $91 billion in 2017, a record compared with 2016.
The bank disclosed in its 2017 annual report released on Thursday that the figure was an increase of 45 percent from $62.75 billion in 2016.
The bank also said the figure surpassed the total outflow by $57.32 billion in the period.
According to the bank, inflow through the CBN was $42.17 billion, while inflow through autonomous sources amounted to $48.33 billion.
In percentage terms, inflow through the CBN accounted for 46.3 percent, while autonomous sources took 53.7 percent.
Also, aggregate foreign exchange outflow, from the economy, increased by 31.8 percent to U$33.68 billion, higher than the $25.55 billion in 2016.
The report said the outflow through the CBN accounted for 90.7 percent, about $30.55 billion. It was $23.16 billion in 2016.
Outflow via autonomous sources was calculated at $3.13 billion
The increase was attributable to the increased intervention by the CBN in the inter-bank and Bureau De Change (BDC) segments of the foreign exchange market.