Japan posted a current account surplus of ¥1.35 trillion ($12 billion) in November on robust earnings from foreign investments, marking the 41st straight month of black ink, government data showed Friday.

But the surplus shrank 5.6 percent from a year ago as trade-reliant Japan had a smaller trade surplus of ¥181.0 billion in November due to a surge in imports. It marked the first year-on-year drop in five months, the Finance Ministry said in a preliminary report.

Imports gained by a greater margin than exports, up 17.6 percent from a year ago to ¥6.59 trillion amid swelling energy imports in value.