The central bank explained that this was used to fund Bureaux De Change (BDC) operations, payment of estacode and Personal Travel Allowances (PTA) to Ministries, Departments and Agencies (MDAs).
The CBN stated that receipt and authentication of foreign currency deposits by Deposit Money Banks (DMBs) reduced significantly due to the downturn in global trade in 2020.
This represented a decrease of N16.91 billion or 28.84 per cent compared to the preceding year.
According to the central bank, currency printing gulped N64.04 billion in 2018.
Sources said the reduction was in line with the policy objective of the CBN Governor, Mr. Godwin Emefiele, to reduce the cost of printing bank notes and cash management, in the country.
The Central Bank Digital Currency (CBDC) also known as the eNaira, which was unveiled recently by President Muhammadu Buhari, is in line with the policy to further reduce the cost of printing the naira.
According to the report, total stock of currency (issuable and non-issuable) in the vaults of the CBN stood at 2.75 billion as at December 2020 compared to 2.64 billion pieces in 2019, indicating an increase of 105.73 million pieces or 4 per cent.
In the period under review, total issuable notes (newly printed notes and Counted Audited Clean notes) was 592.94 million pieces, compared with 726.43 million pieces in 2019, representing a decrease of 133.49 million pieces or 18.38 per cent.
The central bank said it generated the sum of N6.50 billion as total income from currency management activities in 2020, compared with N13.24 billion in the preceding year, representing a decrease of N6.74 billion or 50.92 per cent.
The bank explained that the income generated was largely, from penal charges on unsorted banknotes deposited by Deposit Money Bank (DMBs) and charges for authentication of foreign currency deposits with the central bank.
The CBN, however, incurred a total of N67.21 billion as expenses on currency operations in 2020, representing a decrease of N17.96 billion or 21.08 per cent, less than N 85.18 billion in 2019.
The apex bank added that despite the limitations occasioned by the outbreak of the COVID-19 pandemic and its impact in 2020, the bank nonetheless, concluded upgrade of the Cash Activity Reporting Portal (CARP) for transmission of currency management data from the financial industry to the Nigeria Inter-Bank Settlement System (NIBSS).
It also completed the development of the Mint tracking system application, needs assessment on the infrastructure, user sensitisation, test run at five branches and end-to-end system tests with a view to instituting the pilot launch in 2021.
The CBN also commenced establishment of the currency lab for banknote quality assessment, authentication and independent investigations as well as to adjudicate cases of suspected counterfeit banknotes.
It also registered an additional Cash-in-Transit (CIT) company which brought the total to nine CIT companies, to further deepen the private sector participation in CIT services among others.