Eurozone inflation remained unchanged at a lower than expected 0.2 percent in December, official data said on Tuesday, adding pressure on the European Central Bank to ramp up its efforts to boost the economy in Europe.

ECB president Mario Draghi last month disappointed market hopes with a more limited than expected bid to revive the struggling eurozone economy given low inflation levels across the 19 countries that share the euro.

The data from the EU's Eurostat statistics agency came in below analysts' forecast of 0.3 percent inflation for the period, which is much lower than the ECB's official two percent target.