| # | Number in Service | Total Number in Service | Answer | % Correct |
|---|---|---|---|---|
| 2 | 0 | 40 | UK | 100%
|
| 1 | 10 | 68 | USA | 100%
|
| 4 | 1 | 8 | France | 97%
|
| 5 | 1 | 7 | Russia | 91%
|
| 6 | 2 | 3 | India | 88%
|
| 10 | 2 | 2 | Italy | 84%
|
| 3 | 0 | 20 | Japan | 81%
|
| = | 1 | 3 | Spain | 81%
|
| = | 0 | 3 | Australia | 59%
|
| = | 0 | 3 | Canada | 56%
|