When did Pakistan became member of SCO?

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Tags

1. #shanghai
2. #countries
3. #pakistan
4. #expanded
5. #previously
6. #india
7. #original
8. #membership
9. #kazakhstan
10. #eight
11. #since
12. #astana
13. #members
14. #april
15. #exclusion
16. #uzbekistan
17. #founded
18. #nations
19. #summit
20. #organisation
21. #joined
22. #group