Japan's monetary base rose 11.5 percent in April from a year earlier to 101.54 trillion yen, up for the 27th straight month, the Bank of Japan said Friday.
The monetary base -- cash in circulation plus money in current accounts held by banks at the central bank -- rose 10.9 percent in March.
The increase in April marked the 20th straight month of double-digit rises.
The balance of banks' current accounts at the BOJ rose 37.2 percent in the reporting month to 27.42 trillion yen, the central bank said. The balance rose 30.1 percent the previous month.
The monetary base has been growing rapidly since March 2001, when the BOJ adopted a policy of quantitative monetary easing by injecting funds into the banking system to stem deflation.