According to Eurostat, in 2018 the euro was the most used currency for EU exports with a share of 48% of the total value of goods exported to non-EU countries and a share of 35% invoiced in US dollars.
The picture was reversed for imports, with 56% of imports paid in US dollars and around a third in euros (35%).
For total trade (exports plus imports) the US dollar (45%) was used slightly more often than the euro (41%).