Japan’s current account surplus slipped in May.

The broadest measure of Japan’s foreign trade surplus registered a modest decline in May from a year ago, the government reported, showing signs that a strong yen may be helping reverse the U.S.-Japanese trade imbalance. The Finance Ministry said the surplus in Japan’s current account narrowed to $7.08 billion in May before seasonal adjustment from $7.653 billion a year earlier and $7.985 billion in April. The current account tracks the movement of cash and merchandise in and out of the country.