| Country | Last Name | % Correct |
|---|---|---|
| United Kingdom | Smith | 89%
|
| Germany | Müller | 45%
|
| Switzerland | Müller | 45%
|
| Andorra | Garcia | 42%
|
| Spain | Garcia | 42%
|
| France | Martin | 32%
|
| Sweden | Andersson | 30%
|
| Italy | Rossi | 30%
|
| Monaco | Rossi | 30%
|
| Belarus | Ivanov | 27%
|
| Bulgaria | Ivanov | 27%
|
| Russia | Ivanova | 24%
|
| Netherlands | De Jong | 17%
|
| Slovenia | Novak | 17%
|
| Portugal | Silva | 17%
|
| Ireland | Murphy | 15%
|
| Denmark | Jensen | 14%
|
| Serbia | Jovanović | 14%
|
| Poland | Nowak | 14%
|
| Greece | Papadopoulos | 14%
|
| Croatia | Horvat | 13%
|
| Hungary | Nagy | 13%
|
| Norway | Hansen | 11%
|
| Albania | Hoxha | 10%
|
| Luxembourg | Schmit | 10%
|
| Finland | Korhonen | 8%
|
| Bosnia & Herzegovina | Hodžić | 6%
|
| Ukraine | Melnik | 6%
|
| Belgium | Peeters | 6%
|
| Malta | Borg | 4%
|
| Austria | Gruber | 4%
|
| Romania | Popa | 4%
|
| Slovakia | Varga | 4%
|
| Latvia | Bērziņš | 3%
|
| Iceland | Jónsdóttir | 3%
|
| Czech Republic | Nováková | 3%
|
| Montenegro | Popović | 3%
|
| Estonia | Tamm | 3%
|
| Vatican City | Bachmann | 1%
|
| Liechtenstein | Büchel | 1%
|
| San Marino | Gasperoni | 1%
|
| Lithuania | Kazlauskas | 1%
|
| Kosovo | Krasniqi | 1%
|
| Moldova | Rusu | 1%
|
| North Macedonia | Stojanovski | 1%
|