Euro zone's trade balance showed a widened surplus in December to 4.4 billion euros from the revised 4.0 billion euros from 4.8 billion euros surplus, yet below estimates of 5.0 billion euros surplus. With regard to the seasonally adjusted reading, it leaped to 7.0 billion euros surplus relative to the previous 3.9 billion euros surplus revised to 5.3 billion euros surplus and forecasts of 3.9 billion euros surplus.