Nigeria central bank has increased the supply of banknotes to end the shortage that has hampered individual and business transactions since January. Despite a court order to redistribute old notes equivalent to 2.2 tln naira, or 70% of cash in circulation, to ease the shortage, residents still faced difficulties accessing banknotes as of last week. That prompted the Nigerian Labour Congress to call for protests at central bank offices starting March 29. Cash accounts for about 90% of transactions in Nigeria’s informal economy.