The Socceroos' 1-0 victories over Iraq and Ghana has moved them up eight places to No.35, with Japan dropping one place to No.38.

Korea stepped up five places to 45 and Iran rose three to 48 but none of the other Asian countries features in the latest top 50 rankings. Australia's surge in rankings was the highest of any nation in the top 50.

At the top, Argentina extended their points lead over second-placed Brazil despite being inactive during May.

Brazil enjoyed a 3-2 victory over Canada in their only match during the month, however, they lost ground by virtue of the ranking system's eight-year linear cycle.

Dunga's side will, however, be able to bridge the gap on Argentina later this month when the teams meet in a World Cup qualifier in Belo Horizonte on June 18.

World champions Italy remained in third place ahead of an unchanged top eight.

England climbed back into the top 10, up two places to ninth, following back-to-back wins against the USA and Trinidad & Tobago under new manager Fabio Capello.

Cameroon moved up three places to 13th to be the best ranked of the African teams while Egypt climbed seven places to 23rd.

FIFA rankings, top 20 (previous position in brackets)
1. (1) Argentina
2. (2) Brazil
3. (3) Italy
4. (4) Spain
5. (5) Germany
6. (6) Czech Republic
7. (7) France
8. (8) Greece
9. (11) England
10. (10) Netherlands
11. (9) Portugal
12. (12) Romania
13. (16) Cameroon
14. (17) Mexico
15. (13) Croatia
16. (14) Ghana
17. (15) Scotland
18. (18) Bulgaria
19. (19) Colombia
20. (25) Turkey