| country | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 |
|---|---|---|---|---|---|---|
| Greece | 7 | 4 | 7 | 2 | 2 | 2 |
| Spain | 2 | 3 | 1 | 4 | 6 | 6 |
| Germany | 2 | 4 | 7 | 2 | 2 | 1 |
| Italy | 3 | 1 | 3 | 7 | 4 | |
| Poland | 4 | 2 | 4 | 3 | 3 | 1 |
| Austria | 2 | 2 | 1 | 0 | 6 | 4 |
| Belgium | 6 | 1 | 3 | 2 | 2 | |
| Hungary | 1 | 1 | 3 | 5 | 4 | |
| Portugal | 5 | 4 | 3 | 1 | 1 | |
| Luxembourg | 2 | 2 | 3 | 0 | 4 | |
| Slovenia | 1 | 1 | 1 | 2 | 4 | 2 |
| United Kingdom | 3 | 2 | 1 | 2 | 1 | 2 |
| Bulgaria | 2 | 1 | 3 | 2 | 2 | |
| Ireland | 3 | 1 | 3 | 2 | 1 | |
| Czech Republic | 1 | 2 | 2 | 2 | 1 | |
| Romania | 3 | 1 | 1 | 3 | ||
| France | 3 | 1 | 2 | 1 | ||
| Croatia | 2 | 3 | ||||
| Finland | 2 | 1 | 1 | |||
| Denmark | 2 | 1 | ||||
| Latvia | 1 | 2 | ||||
| Slovakia | 1 | 1 | 1 | |||
| Cyprus | 1 | 1 | ||||
| Malta | 1 | 1 | ||||
| Netherlands | 1 | 1 | ||||
| Estonia | 1 | |||||
| Sweden | 1 | |||||
| Lithuania |