Despite the huge amount of interest received (nearly $9 billion a year), there was on average over the period hardly any current account surplus.
The current account surplus totaled $28.92 billion for the first half of the financial year.
Japan's current account surplus grew 13 percent in March from the month a year earlier, for a ninth straight increase.
Japan's current account surplus grew 2.3 percent in August from the month a year ago, the 14th consecutive such increase.
Europe is not running chronic trade and "current account" surpluses with the rest of the world.
But slow growth or not, its current account surplus is surging, mostly from trade.
Pray tell, how can all countries run current account surpluses at the same time?
Japan's current account surplus grew 34 percent in November from the month a year ago, the fifth straight increase.
Japan's current account surplus tumbled to its lowest level in four years.
Japan's current account surplus grew 38 percent in September from a year earlier, helped by strong exports.