How many EU countries use the euro?
Answer21 EU countries
The euro was launched in 1999, and not every one of the 27 member states has adopted it.
Source: European Union, Facts and figures on the EU (2025) european-union.europa.eu
Places · Facts & sources
EU facts & stats
6 sourced facts about the European Union, each with the context behind the number. 4 more are in today's round and appear here after it closes.
The basics
Going deeper
About what share of the energy consumed in the EU is renewable?
Answer24.5%
Almost 70% of all energy in the EU is still produced from coal, oil and gas.
Source: European Union, Facts and figures on the EU (2025) european-union.europa.eu
Services account for about what share of the EU's GDP?
Answer74%
The service sector is also by far the EU's biggest employer, with a 74% share of jobs.
Source: European Union, Facts and figures on the EU (2025) european-union.europa.eu
On average, how much less do women in the EU earn than men?
Answer12% less
Women also account for only slightly more than a third (35%) of managers in the EU.
Source: European Union, Facts and figures on the EU (2025) european-union.europa.eu
Expert level
In 2024, how many working-age people were there in the EU for each older person?
Answer2.7 (down from 3.8 in 2002)
The ratio fell from 3.8 in 2002 to 2.7 by 2024 as Europe's population ages.
Source: European Union, Facts and figures on the EU (2024) european-union.europa.eu
How many students took part in the first year of the Erasmus exchange programme in 1987?
Answer3,200 students
They came from 11 European countries; since then Erasmus+ has allowed 16 million people to live and study abroad.
Source: European Union, Facts and figures on the EU (2025) european-union.europa.eu
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