When did Chelsea win the Europa League?

Related questions

1. Which team did Chelsea beat to win the Champions League?
2. When last did Chelsea win the Champions League?
3. Who is the most successful football club in London?
4. How many times have Chelsea won the league?
5. What happens if Chelsea win the Europa League?
6. Who are Arsenal's rivals?
7. What teams have never been relegated?
8. Who is Chelsea's coach?
9. When did Chelsea win Europa League?
10. Which part of London is Chelsea?

Tags

1. #teams
2. #arsenal
3. #first
4. #finals
5. #history
6. #english
7. #final
8. #tottenham
9. #playing
10. #liverpool
11. #contested
12. #madrid
13. #europa
14. #chelsea
15. #wednesday
16. #league
17. #champions