The euro zone's adjusted current account surplus narrowed slightly in December, moving broadly in line with its recent trend, European Central Bank data showed today. 

The currency bloc recorded an adjusted surplus of €29.9 billion in December, compared with €35 billion a month earlier, the data showed. 

Over the past 12 months, the bloc's surplus was 3.5% of GDP, up from 3.4% a year earlier, with the figure hovering around this level for most of the past two years. 

The unadjusted surplus increased to €45.8 billion from €40.1 billion in November, the ECB said in a monthly release.