Two groups of countries appear across this site, and mixing them up leads to confusion.
The European Union
The EU is a political and economic union of 27 member states. Fiscal data — spending, revenue, deficits, debt — is reported for all of them, plus an EU-wide aggregate.
The eurozone
The eurozone is the subset of EU members that have adopted the euro as their currency. Monetary policy — interest rates, money supply, the central-bank balance sheet — is set by the ECB for the eurozone as a whole, not for each country.
So when you see an interest rate or a money-supply figure, it is a single number for the whole currency area. When you see debt or unemployment, it is country by country. Non-euro EU members (and some non-EU European countries) keep their own currencies and their own central banks.