The nation's monetary base jumped 23.1 percent in April from a year earlier to ¥149.60 trillion, setting new record highs for two months in a row as the Bank of Japan aggressively eases to fight deflation.

The central bank said Thursday that the average daily balance of liquidity it provided — consisting of cash in circulation and the balance of current account deposits held by commercial financial institutions at the BOJ — expanded for the 12th consecutive month.

Japan's monetary base at the end of April stood at ¥155.28 trillion, the highest on record, it said.