1.
2.
3.
4.
5. Five Years (02.)
6. The Jean Genie (07.)
7. Letter to Hermione (04.)
8. Ziggy Stardust (14.)
9. Bring Me the Disco King (12.)
10. Wild is the Wind (11.)
11. Moonage Daydream (03.)
12. Rebel Rebel (18.)
13. Something in the Air (10.)
14. Sweet Thing (06.)
15. Young Americans (20.)
16. Love is Lost (16.)
17. Sweet Head (13.)
18. Seven Years in Tibet (17.)
19. Rock N Roll With Me (15.)
20. Quicksand (19.)

My ranking in brackets...
...added The Bewlay Brothers because it's probably my new favourite song now! It would have been your number 6!