Table 2A.
Results of the cluster analysis by type of notification
| Notifying country | Cluster 2018 | Notifying country | Cluster 2019 | Notifying country | Cluster 2020 |
|---|---|---|---|---|---|
| Austria | 1 | Austria | 1 | Austria | 1 |
| Luxembourg | 1 | Luxembourg | 1 | Luxembourg | 1 |
| Ireland | 1 | Ireland | 1 | Ireland | 1 |
| Switzerland | 1 | Belgium | 1 | Switzerland | 1 |
| Portugal | 1 | Switzerland | 1 | Portugal | 1 |
| Sweden | 1 | Portugal | 1 | Sweden | 1 |
| Denmark | 1 | Sweden | 1 | Denmark | 1 |
| Norway | 1 | Denmark | 1 | Norway | 1 |
| Slovakia | 1 | Norway | 1 | Slovakia | 1 |
| Estonia | 1 | Slovakia | 1 | Estonia | 1 |
| Malta | 1 | Estonia | 1 | Malta | 1 |
| Cyprus | 1 | Malta | 1 | Cyprus | 1 |
| Finland | 1 | Cyprus | 1 | Finland | 1 |
| Czech Republic | 1 | Finland | 1 | Czech Republic | 1 |
| Romania | 1 | Czech Republic | 1 | Romania | 1 |
| Slovenia | 1 | Romania | 1 | Slovenia | 1 |
| Lithuania | 1 | Slovenia | 1 | Lithuania | 1 |
| Croatia | 1 | Lithuania | 1 | Croatia | 1 |
| Latvia | 1 | Croatia | 1 | Latvia | 1 |
| Hungary | 1 | Latvia | 1 | Hungary | 1 |
| Greece | 2 | Poland | 1 | Greece | 2 |
| Spain | 2 | Hungary | 1 | Spain | 2 |
| Belgium | 2 | Greece | 2 | Poland | 2 |
| France | 2 | Spain | 2 | Bulgaria | 2 |
| Poland | 2 | Bulgaria | 2 | Belgium | 3 |
| Bulgaria | 2 | Italy | 3 | Italy | 3 |
| Italy | 3 | United Kingdom | 3 | France | 3 |
| United Kingdom | 3 | Netherlands | 3 | Germany | 3 |
| Netherlands | 3 | France | 3 | United Kingdom | 3 |
| Germany | 3 | Germany | 3 | Netherlands | 3 |