| Countries | 2018 | 2020 |
|---|---|---|
| EU-27 | 2.1 | 2.3 |
| Belgium | 3.4 | 3.5 |
| Austria | 3.4 | 3.4 |
| Romania | 3.5 | 3.3 |
| Poland | 1.9 | 2.8 |
| Czechia | 2.6 | 2.7 |
| Italy | 2.4 | 2.6 |
| Slovenia | 1.9 | 2.5 |
| Germany | 2.2 | 2.4 |
| Estonia | 2.4 | 2.3 |
| Malta | 1.8 | 2.3 |
| Sweden | 2.0 | 2.1 |
| Bulgaria | 1.8 | 2.0 |
| France | 1.9 | 2.0 |
| Croatia | 1.6 | 2.0 |
| Netherlands | 1.7 | 1.9 |
| Slovakia | 2.1 | 1.9 |
| Spain | 1.6 | 1.7 |
| Portugal | 1.5 | 1.7 |
| Denmark | 1.4 | 1.6 |
| Hungary | 1.5 | 1.6 |
| Lithuania | 1.7 | 1.5 |
| Greece | 1.3 | 1.3 |
| Latvia | 1.1 | 1.3 |
| Luxembourg | 1.0 | 1.3 |
| Finland | 1.2 | 1.2 |
| Cyprus | 1.2 | 1.1 |
| Ireland | 0.6 | 0.6 |